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Finding the Fourth Proportional to 418,348.48, 627,517.28 and 102,808.16

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Solution

The fourth proportional to 418,348.48, 627,517.28 and 102,808.16 is: 154,210.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,348.48 : 627,517.28 = 102,808.16 : x
  2. Step 2: Convert to fraction form
    418,348.48/627,517.28 = 102,808.16/x
  3. Step 3: Cross multiply
    418,348.48x = 627,517.28 × 102,808.16
  4. Step 4: Simplify right side
    418,348.48x = 64,513,896,925.00
  5. Step 5: Solve for x
    x = 64,513,896,925.00/418,348.48
  6. Step 6: Final answer
    x = 154,210.90

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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.