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Finding the Fourth Proportional to 455,178.48, 628,145.91 and 253,974.48

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Solution

The fourth proportional to 455,178.48, 628,145.91 and 253,974.48 is: 350,484.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,178.48 : 628,145.91 = 253,974.48 : x
  2. Step 2: Convert to fraction form
    455,178.48/628,145.91 = 253,974.48/x
  3. Step 3: Cross multiply
    455,178.48x = 628,145.91 × 253,974.48
  4. Step 4: Simplify right side
    455,178.48x = 159,533,030,856.38
  5. Step 5: Solve for x
    x = 159,533,030,856.38/455,178.48
  6. Step 6: Final answer
    x = 350,484.56

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Find fourth proportional to 910,356.96, 1,256,291.82 and 507,948.96
Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.