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Finding the Fourth Proportional to 272,000.70, 408,001.05 and 266,471.10

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Solution

The fourth proportional to 272,000.70, 408,001.05 and 266,471.10 is: 399,706.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,000.70 : 408,001.05 = 266,471.10 : x
  2. Step 2: Convert to fraction form
    272,000.70/408,001.05 = 266,471.10/x
  3. Step 3: Cross multiply
    272,000.70x = 408,001.05 × 266,471.10
  4. Step 4: Simplify right side
    272,000.70x = 108,720,488,594.66
  5. Step 5: Solve for x
    x = 108,720,488,594.66/272,000.70
  6. Step 6: Final answer
    x = 399,706.65

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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.