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Finding the Fourth Proportional to 187,007.28, 280,613 and 108,275.28

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Solution

The fourth proportional to 187,007.28, 280,613 and 108,275.28 is: 162,472.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,007.28 : 280,613 = 108,275.28 : x
  2. Step 2: Convert to fraction form
    187,007.28/280,613 = 108,275.28/x
  3. Step 3: Cross multiply
    187,007.28x = 280,613 × 108,275.28
  4. Step 4: Simplify right side
    187,007.28x = 30,383,451,146.64
  5. Step 5: Solve for x
    x = 30,383,451,146.64/187,007.28
  6. Step 6: Final answer
    x = 162,472.02

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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.