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Finding the Fourth Proportional to 418,350.48, 627,520.28 and 102,810.16

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Solution

The fourth proportional to 418,350.48, 627,520.28 and 102,810.16 is: 154,213.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,350.48 : 627,520.28 = 102,810.16 : x
  2. Step 2: Convert to fraction form
    418,350.48/627,520.28 = 102,810.16/x
  3. Step 3: Cross multiply
    418,350.48x = 627,520.28 × 102,810.16
  4. Step 4: Simplify right side
    418,350.48x = 64,515,460,390.04
  5. Step 5: Solve for x
    x = 64,515,460,390.04/418,350.48
  6. Step 6: Final answer
    x = 154,213.90

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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.