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Finding the Fourth Proportional to 285,612.13, 428,454.65 and 95,991.13

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Solution

The fourth proportional to 285,612.13, 428,454.65 and 95,991.13 is: 143,998.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,612.13 : 428,454.65 = 95,991.13 : x
  2. Step 2: Convert to fraction form
    285,612.13/428,454.65 = 95,991.13/x
  3. Step 3: Cross multiply
    285,612.13x = 428,454.65 × 95,991.13
  4. Step 4: Simplify right side
    285,612.13x = 41,127,846,007.25
  5. Step 5: Solve for x
    x = 41,127,846,007.25/285,612.13
  6. Step 6: Final answer
    x = 143,998.95

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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.