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Finding the Fourth Proportional to 207,691.75, 311,567.70 and 65,488.76

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Solution

The fourth proportional to 207,691.75, 311,567.70 and 65,488.76 is: 98,242.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,691.75 : 311,567.70 = 65,488.76 : x
  2. Step 2: Convert to fraction form
    207,691.75/311,567.70 = 65,488.76/x
  3. Step 3: Cross multiply
    207,691.75x = 311,567.70 × 65,488.76
  4. Step 4: Simplify right side
    207,691.75x = 20,404,182,329.05
  5. Step 5: Solve for x
    x = 20,404,182,329.05/207,691.75
  6. Step 6: Final answer
    x = 98,242.62

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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.