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Finding the Fourth Proportional to 266,038.20, 399,251.70 and 187,306.20

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Solution

The fourth proportional to 266,038.20, 399,251.70 and 187,306.20 is: 281,096.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,038.20 : 399,251.70 = 187,306.20 : x
  2. Step 2: Convert to fraction form
    266,038.20/399,251.70 = 187,306.20/x
  3. Step 3: Cross multiply
    266,038.20x = 399,251.70 × 187,306.20
  4. Step 4: Simplify right side
    266,038.20x = 74,782,318,770.54
  5. Step 5: Solve for x
    x = 74,782,318,770.54/266,038.20
  6. Step 6: Final answer
    x = 281,096.17

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1.5x scale

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.