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Finding the Fourth Proportional to 235,451.10, 353,333.69 and 85,691.35

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Solution

The fourth proportional to 235,451.10, 353,333.69 and 85,691.35 is: 128,594.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,451.10 : 353,333.69 = 85,691.35 : x
  2. Step 2: Convert to fraction form
    235,451.10/353,333.69 = 85,691.35/x
  3. Step 3: Cross multiply
    235,451.10x = 353,333.69 × 85,691.35
  4. Step 4: Simplify right side
    235,451.10x = 30,277,640,227.48
  5. Step 5: Solve for x
    x = 30,277,640,227.48/235,451.10
  6. Step 6: Final answer
    x = 128,594.18

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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.