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Finding the Fourth Proportional to 315,193.54, 472,793.52 and 90,553.40

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Solution

The fourth proportional to 315,193.54, 472,793.52 and 90,553.40 is: 135,831.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,193.54 : 472,793.52 = 90,553.40 : x
  2. Step 2: Convert to fraction form
    315,193.54/472,793.52 = 90,553.40/x
  3. Step 3: Cross multiply
    315,193.54x = 472,793.52 × 90,553.40
  4. Step 4: Simplify right side
    315,193.54x = 42,813,060,733.97
  5. Step 5: Solve for x
    x = 42,813,060,733.97/315,193.54
  6. Step 6: Final answer
    x = 135,831.02

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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.