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Finding the Fourth Proportional to 455,158.98, 628,119 and 253,954.98

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Solution

The fourth proportional to 455,158.98, 628,119 and 253,954.98 is: 350,457.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,158.98 : 628,119 = 253,954.98 : x
  2. Step 2: Convert to fraction form
    455,158.98/628,119 = 253,954.98/x
  3. Step 3: Cross multiply
    455,158.98x = 628,119 × 253,954.98
  4. Step 4: Simplify right side
    455,158.98x = 159,513,948,082.62
  5. Step 5: Solve for x
    x = 159,513,948,082.62/455,158.98
  6. Step 6: Final answer
    x = 350,457.65

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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.