Home / 285,952.14-428,789.25-86,235.30

Finding the Fourth Proportional to 285,952.14, 428,789.25 and 86,235.30

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Solution

The fourth proportional to 285,952.14, 428,789.25 and 86,235.30 is: 129,311.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,952.14 : 428,789.25 = 86,235.30 : x
  2. Step 2: Convert to fraction form
    285,952.14/428,789.25 = 86,235.30/x
  3. Step 3: Cross multiply
    285,952.14x = 428,789.25 × 86,235.30
  4. Step 4: Simplify right side
    285,952.14x = 36,976,769,610.53
  5. Step 5: Solve for x
    x = 36,976,769,610.53/285,952.14
  6. Step 6: Final answer
    x = 129,311.04

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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.