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Finding the Fourth Proportional to 231,572.92, 347,345.94 and 89,390.38

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Solution

The fourth proportional to 231,572.92, 347,345.94 and 89,390.38 is: 134,080.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,572.92 : 347,345.94 = 89,390.38 : x
  2. Step 2: Convert to fraction form
    231,572.92/347,345.94 = 89,390.38/x
  3. Step 3: Cross multiply
    231,572.92x = 347,345.94 × 89,390.38
  4. Step 4: Simplify right side
    231,572.92x = 31,049,385,568.06
  5. Step 5: Solve for x
    x = 31,049,385,568.06/231,572.92
  6. Step 6: Final answer
    x = 134,080.38

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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.