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Finding the Fourth Proportional to 418,610.53, 627,125.65 and 247,321.15

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Solution

The fourth proportional to 418,610.53, 627,125.65 and 247,321.15 is: 370,514.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,610.53 : 627,125.65 = 247,321.15 : x
  2. Step 2: Convert to fraction form
    418,610.53/627,125.65 = 247,321.15/x
  3. Step 3: Cross multiply
    418,610.53x = 627,125.65 × 247,321.15
  4. Step 4: Simplify right side
    418,610.53x = 155,101,434,766.38
  5. Step 5: Solve for x
    x = 155,101,434,766.38/418,610.53
  6. Step 6: Final answer
    x = 370,514.89

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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.