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Finding the Fourth Proportional to 265,042.50, 397,478.96 and 87,516.42

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Solution

The fourth proportional to 265,042.50, 397,478.96 and 87,516.42 is: 131,246.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,042.50 : 397,478.96 = 87,516.42 : x
  2. Step 2: Convert to fraction form
    265,042.50/397,478.96 = 87,516.42/x
  3. Step 3: Cross multiply
    265,042.50x = 397,478.96 × 87,516.42
  4. Step 4: Simplify right side
    265,042.50x = 34,785,935,604.52
  5. Step 5: Solve for x
    x = 34,785,935,604.52/265,042.50
  6. Step 6: Final answer
    x = 131,246.63

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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.