Home / 287,654.32-431,481.25-77,292.26

Finding the Fourth Proportional to 287,654.32, 431,481.25 and 77,292.26

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Solution

The fourth proportional to 287,654.32, 431,481.25 and 77,292.26 is: 115,938.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,654.32 : 431,481.25 = 77,292.26 : x
  2. Step 2: Convert to fraction form
    287,654.32/431,481.25 = 77,292.26/x
  3. Step 3: Cross multiply
    287,654.32x = 431,481.25 × 77,292.26
  4. Step 4: Simplify right side
    287,654.32x = 33,350,160,517.39
  5. Step 5: Solve for x
    x = 33,350,160,517.39/287,654.32
  6. Step 6: Final answer
    x = 115,938.33

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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.