Home / 257,528.52-386,218.89-77,631.48

Finding the Fourth Proportional to 257,528.52, 386,218.89 and 77,631.48

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Solution

The fourth proportional to 257,528.52, 386,218.89 and 77,631.48 is: 116,424.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,528.52 : 386,218.89 = 77,631.48 : x
  2. Step 2: Convert to fraction form
    257,528.52/386,218.89 = 77,631.48/x
  3. Step 3: Cross multiply
    257,528.52x = 386,218.89 × 77,631.48
  4. Step 4: Simplify right side
    257,528.52x = 29,982,744,034.66
  5. Step 5: Solve for x
    x = 29,982,744,034.66/257,528.52
  6. Step 6: Final answer
    x = 116,424.95

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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.