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Finding the Fourth Proportional to 354,620.10, 531,930.15 and 275,304.90

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Solution

The fourth proportional to 354,620.10, 531,930.15 and 275,304.90 is: 412,957.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,620.10 : 531,930.15 = 275,304.90 : x
  2. Step 2: Convert to fraction form
    354,620.10/531,930.15 = 275,304.90/x
  3. Step 3: Cross multiply
    354,620.10x = 531,930.15 × 275,304.90
  4. Step 4: Simplify right side
    354,620.10x = 146,442,976,752.74
  5. Step 5: Solve for x
    x = 146,442,976,752.74/354,620.10
  6. Step 6: Final answer
    x = 412,957.35

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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.