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Finding the Fourth Proportional to 418,292.72, 627,387.24 and 247,616

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Solution

The fourth proportional to 418,292.72, 627,387.24 and 247,616 is: 371,393.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,292.72 : 627,387.24 = 247,616 : x
  2. Step 2: Convert to fraction form
    418,292.72/627,387.24 = 247,616/x
  3. Step 3: Cross multiply
    418,292.72x = 627,387.24 × 247,616
  4. Step 4: Simplify right side
    418,292.72x = 155,351,118,819.84
  5. Step 5: Solve for x
    x = 155,351,118,819.84/418,292.72
  6. Step 6: Final answer
    x = 371,393.31

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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.