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Finding the Fourth Proportional to 266,961.90, 399,859.65 and 207,329.70

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Solution

The fourth proportional to 266,961.90, 399,859.65 and 207,329.70 is: 310,541.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,961.90 : 399,859.65 = 207,329.70 : x
  2. Step 2: Convert to fraction form
    266,961.90/399,859.65 = 207,329.70/x
  3. Step 3: Cross multiply
    266,961.90x = 399,859.65 × 207,329.70
  4. Step 4: Simplify right side
    266,961.90x = 82,902,781,276.61
  5. Step 5: Solve for x
    x = 82,902,781,276.61/266,961.90
  6. Step 6: Final answer
    x = 310,541.62

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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.