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Finding the Fourth Proportional to 619,149.89, 928,725.85 and 169,876.91

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Solution

The fourth proportional to 619,149.89, 928,725.85 and 169,876.91 is: 254,815.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,149.89 : 928,725.85 = 169,876.91 : x
  2. Step 2: Convert to fraction form
    619,149.89/928,725.85 = 169,876.91/x
  3. Step 3: Cross multiply
    619,149.89x = 928,725.85 × 169,876.91
  4. Step 4: Simplify right side
    619,149.89x = 157,769,080,169.28
  5. Step 5: Solve for x
    x = 157,769,080,169.28/619,149.89
  6. Step 6: Final answer
    x = 254,815.65

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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.