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Finding the Fourth Proportional to 315,132.73, 472,399.90 and 125,709.37

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Solution

The fourth proportional to 315,132.73, 472,399.90 and 125,709.37 is: 188,444.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,132.73 : 472,399.90 = 125,709.37 : x
  2. Step 2: Convert to fraction form
    315,132.73/472,399.90 = 125,709.37/x
  3. Step 3: Cross multiply
    315,132.73x = 472,399.90 × 125,709.37
  4. Step 4: Simplify right side
    315,132.73x = 59,385,092,321.79
  5. Step 5: Solve for x
    x = 59,385,092,321.79/315,132.73
  6. Step 6: Final answer
    x = 188,444.70

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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.