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Finding the Fourth Proportional to 455,255.69, 628,226.01 and 251,301.60

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Solution

The fourth proportional to 455,255.69, 628,226.01 and 251,301.60 is: 346,781.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,255.69 : 628,226.01 = 251,301.60 : x
  2. Step 2: Convert to fraction form
    455,255.69/628,226.01 = 251,301.60/x
  3. Step 3: Cross multiply
    455,255.69x = 628,226.01 × 251,301.60
  4. Step 4: Simplify right side
    455,255.69x = 157,874,201,474.62
  5. Step 5: Solve for x
    x = 157,874,201,474.62/455,255.69
  6. Step 6: Final answer
    x = 346,781.39

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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.