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Finding the Fourth Proportional to 518,812.03, 778,241.90 and 158,957.11

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Solution

The fourth proportional to 518,812.03, 778,241.90 and 158,957.11 is: 238,442.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,812.03 : 778,241.90 = 158,957.11 : x
  2. Step 2: Convert to fraction form
    518,812.03/778,241.90 = 158,957.11/x
  3. Step 3: Cross multiply
    518,812.03x = 778,241.90 × 158,957.11
  4. Step 4: Simplify right side
    518,812.03x = 123,707,083,304.91
  5. Step 5: Solve for x
    x = 123,707,083,304.91/518,812.03
  6. Step 6: Final answer
    x = 238,442.97

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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.