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Finding the Fourth Proportional to 418,344.48, 627,516.72 and 169,201.44

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Solution

The fourth proportional to 418,344.48, 627,516.72 and 169,201.44 is: 253,802.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,344.48 : 627,516.72 = 169,201.44 : x
  2. Step 2: Convert to fraction form
    418,344.48/627,516.72 = 169,201.44/x
  3. Step 3: Cross multiply
    418,344.48x = 627,516.72 × 169,201.44
  4. Step 4: Simplify right side
    418,344.48x = 106,176,732,648.08
  5. Step 5: Solve for x
    x = 106,176,732,648.08/418,344.48
  6. Step 6: Final answer
    x = 253,802.16

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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.