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Finding the Fourth Proportional to 372,440.92, 558,885.54 and 135,803.80

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Solution

The fourth proportional to 372,440.92, 558,885.54 and 135,803.80 is: 203,787.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,440.92 : 558,885.54 = 135,803.80 : x
  2. Step 2: Convert to fraction form
    372,440.92/558,885.54 = 135,803.80/x
  3. Step 3: Cross multiply
    372,440.92x = 558,885.54 × 135,803.80
  4. Step 4: Simplify right side
    372,440.92x = 75,898,780,097.05
  5. Step 5: Solve for x
    x = 75,898,780,097.05/372,440.92
  6. Step 6: Final answer
    x = 203,787.44

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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.