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Finding the Fourth Proportional to 518,257.80, 777,612.42 and 181,540.44

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Solution

The fourth proportional to 518,257.80, 777,612.42 and 181,540.44 is: 272,389.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,257.80 : 777,612.42 = 181,540.44 : x
  2. Step 2: Convert to fraction form
    518,257.80/777,612.42 = 181,540.44/x
  3. Step 3: Cross multiply
    518,257.80x = 777,612.42 × 181,540.44
  4. Step 4: Simplify right side
    518,257.80x = 141,168,100,876.27
  5. Step 5: Solve for x
    x = 141,168,100,876.27/518,257.80
  6. Step 6: Final answer
    x = 272,389.73

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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.