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Finding the Fourth Proportional to 518,371.65, 777,502.20 and 181,418.74

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Solution

The fourth proportional to 518,371.65, 777,502.20 and 181,418.74 is: 272,108.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,371.65 : 777,502.20 = 181,418.74 : x
  2. Step 2: Convert to fraction form
    518,371.65/777,502.20 = 181,418.74/x
  3. Step 3: Cross multiply
    518,371.65x = 777,502.20 × 181,418.74
  4. Step 4: Simplify right side
    518,371.65x = 141,053,469,471.23
  5. Step 5: Solve for x
    x = 141,053,469,471.23/518,371.65
  6. Step 6: Final answer
    x = 272,108.76

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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.