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Finding the Fourth Proportional to 720,149.29, 1,080,224.29 and 187,668.97

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Solution

The fourth proportional to 720,149.29, 1,080,224.29 and 187,668.97 is: 281,503.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,149.29 : 1,080,224.29 = 187,668.97 : x
  2. Step 2: Convert to fraction form
    720,149.29/1,080,224.29 = 187,668.97/x
  3. Step 3: Cross multiply
    720,149.29x = 1,080,224.29 × 187,668.97
  4. Step 4: Simplify right side
    720,149.29x = 202,724,579,873.28
  5. Step 5: Solve for x
    x = 202,724,579,873.28/720,149.29
  6. Step 6: Final answer
    x = 281,503.55

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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.