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Finding the Fourth Proportional to 484,665.27, 727,007.63 and 129,678.72

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Solution

The fourth proportional to 484,665.27, 727,007.63 and 129,678.72 is: 194,520.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,665.27 : 727,007.63 = 129,678.72 : x
  2. Step 2: Convert to fraction form
    484,665.27/727,007.63 = 129,678.72/x
  3. Step 3: Cross multiply
    484,665.27x = 727,007.63 × 129,678.72
  4. Step 4: Simplify right side
    484,665.27x = 94,277,418,240.24
  5. Step 5: Solve for x
    x = 94,277,418,240.24/484,665.27
  6. Step 6: Final answer
    x = 194,520.68

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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.