Home / 287,929.04-431,976.56-88,278.89

Finding the Fourth Proportional to 287,929.04, 431,976.56 and 88,278.89

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Solution

The fourth proportional to 287,929.04, 431,976.56 and 88,278.89 is: 132,443.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,929.04 : 431,976.56 = 88,278.89 : x
  2. Step 2: Convert to fraction form
    287,929.04/431,976.56 = 88,278.89/x
  3. Step 3: Cross multiply
    287,929.04x = 431,976.56 × 88,278.89
  4. Step 4: Simplify right side
    287,929.04x = 38,134,408,621.54
  5. Step 5: Solve for x
    x = 38,134,408,621.54/287,929.04
  6. Step 6: Final answer
    x = 132,443.78

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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.