Home / 315,022,905.20-472,392,640.20-120,869,793.20

Finding the Fourth Proportional to 315,022,905.20, 472,392,640.20 and 120,869,793.20

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Solution

The fourth proportional to 315,022,905.20, 472,392,640.20 and 120,869,793.20 is: 181,250,314.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,022,905.20 : 472,392,640.20 = 120,869,793.20 : x
  2. Step 2: Convert to fraction form
    315,022,905.20/472,392,640.20 = 120,869,793.20/x
  3. Step 3: Cross multiply
    315,022,905.20x = 472,392,640.20 × 120,869,793.20
  4. Step 4: Simplify right side
    315,022,905.20x = 57,098,000,730,176,008
  5. Step 5: Solve for x
    x = 57,098,000,730,176,008/315,022,905.20
  6. Step 6: Final answer
    x = 181,250,314.78

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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.