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Finding the Fourth Proportional to 418,419.90, 627,629.85 and 250,458.30

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Solution

The fourth proportional to 418,419.90, 627,629.85 and 250,458.30 is: 375,687.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,419.90 : 627,629.85 = 250,458.30 : x
  2. Step 2: Convert to fraction form
    418,419.90/627,629.85 = 250,458.30/x
  3. Step 3: Cross multiply
    418,419.90x = 627,629.85 × 250,458.30
  4. Step 4: Simplify right side
    418,419.90x = 157,195,105,260.26
  5. Step 5: Solve for x
    x = 157,195,105,260.26/418,419.90
  6. Step 6: Final answer
    x = 375,687.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.