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Finding the Fourth Proportional to 266,620.43, 399,487.75 and 187,568.57

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Solution

The fourth proportional to 266,620.43, 399,487.75 and 187,568.57 is: 281,041.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,620.43 : 399,487.75 = 187,568.57 : x
  2. Step 2: Convert to fraction form
    266,620.43/399,487.75 = 187,568.57/x
  3. Step 3: Cross multiply
    266,620.43x = 399,487.75 × 187,568.57
  4. Step 4: Simplify right side
    266,620.43x = 74,931,346,000.02
  5. Step 5: Solve for x
    x = 74,931,346,000.02/266,620.43
  6. Step 6: Final answer
    x = 281,041.28

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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.