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Finding the Fourth Proportional to 315,073.26, 472,456.40 and 104,640.12

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Solution

The fourth proportional to 315,073.26, 472,456.40 and 104,640.12 is: 156,909.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,073.26 : 472,456.40 = 104,640.12 : x
  2. Step 2: Convert to fraction form
    315,073.26/472,456.40 = 104,640.12/x
  3. Step 3: Cross multiply
    315,073.26x = 472,456.40 × 104,640.12
  4. Step 4: Simplify right side
    315,073.26x = 49,437,894,390.77
  5. Step 5: Solve for x
    x = 49,437,894,390.77/315,073.26
  6. Step 6: Final answer
    x = 156,909.20

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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.