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Finding the Fourth Proportional to 265,180.97, 397,731.96 and 87,688.91

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Solution

The fourth proportional to 265,180.97, 397,731.96 and 87,688.91 is: 131,520.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,180.97 : 397,731.96 = 87,688.91 : x
  2. Step 2: Convert to fraction form
    265,180.97/397,731.96 = 87,688.91/x
  3. Step 3: Cross multiply
    265,180.97x = 397,731.96 × 87,688.91
  4. Step 4: Simplify right side
    265,180.97x = 34,876,680,055.90
  5. Step 5: Solve for x
    x = 34,876,680,055.90/265,180.97
  6. Step 6: Final answer
    x = 131,520.30

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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.