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Finding the Fourth Proportional to 239,901.86, 331,069.74 and 132,478.72

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Solution

The fourth proportional to 239,901.86, 331,069.74 and 132,478.72 is: 182,823.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,901.86 : 331,069.74 = 132,478.72 : x
  2. Step 2: Convert to fraction form
    239,901.86/331,069.74 = 132,478.72/x
  3. Step 3: Cross multiply
    239,901.86x = 331,069.74 × 132,478.72
  4. Step 4: Simplify right side
    239,901.86x = 43,859,695,385.93
  5. Step 5: Solve for x
    x = 43,859,695,385.93/239,901.86
  6. Step 6: Final answer
    x = 182,823.49

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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.