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Finding the Fourth Proportional to 285,955.86, 428,654.88 and 136,155.90

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Solution

The fourth proportional to 285,955.86, 428,654.88 and 136,155.90 is: 204,101.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,955.86 : 428,654.88 = 136,155.90 : x
  2. Step 2: Convert to fraction form
    285,955.86/428,654.88 = 136,155.90/x
  3. Step 3: Cross multiply
    285,955.86x = 428,654.88 × 136,155.90
  4. Step 4: Simplify right side
    285,955.86x = 58,363,890,975.79
  5. Step 5: Solve for x
    x = 58,363,890,975.79/285,955.86
  6. Step 6: Final answer
    x = 204,101.05

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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.