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Finding the Fourth Proportional to 511,387.92, 767,081.25 and 137,410.92

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Solution

The fourth proportional to 511,387.92, 767,081.25 and 137,410.92 is: 206,116.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,387.92 : 767,081.25 = 137,410.92 : x
  2. Step 2: Convert to fraction form
    511,387.92/767,081.25 = 137,410.92/x
  3. Step 3: Cross multiply
    511,387.92x = 767,081.25 × 137,410.92
  4. Step 4: Simplify right side
    511,387.92x = 105,405,340,277.25
  5. Step 5: Solve for x
    x = 105,405,340,277.25/511,387.92
  6. Step 6: Final answer
    x = 206,116.21

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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.