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Finding the Fourth Proportional to 178,990.32, 247,000.31 and 98,417.28

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Solution

The fourth proportional to 178,990.32, 247,000.31 and 98,417.28 is: 135,812.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,990.32 : 247,000.31 = 98,417.28 : x
  2. Step 2: Convert to fraction form
    178,990.32/247,000.31 = 98,417.28/x
  3. Step 3: Cross multiply
    178,990.32x = 247,000.31 × 98,417.28
  4. Step 4: Simplify right side
    178,990.32x = 24,309,098,177.27
  5. Step 5: Solve for x
    x = 24,309,098,177.27/178,990.32
  6. Step 6: Final answer
    x = 135,812.36

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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.