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Finding the Fourth Proportional to 243,399.57, 335,890.54 and 134,500.87

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Solution

The fourth proportional to 243,399.57, 335,890.54 and 134,500.87 is: 185,610.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,399.57 : 335,890.54 = 134,500.87 : x
  2. Step 2: Convert to fraction form
    243,399.57/335,890.54 = 134,500.87/x
  3. Step 3: Cross multiply
    243,399.57x = 335,890.54 × 134,500.87
  4. Step 4: Simplify right side
    243,399.57x = 45,177,569,854.77
  5. Step 5: Solve for x
    x = 45,177,569,854.77/243,399.57
  6. Step 6: Final answer
    x = 185,610.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.