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Finding the Fourth Proportional to 266,560.83, 399,861.90 and 89,068.47

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Solution

The fourth proportional to 266,560.83, 399,861.90 and 89,068.47 is: 133,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,560.83 : 399,861.90 = 89,068.47 : x
  2. Step 2: Convert to fraction form
    266,560.83/399,861.90 = 89,068.47/x
  3. Step 3: Cross multiply
    266,560.83x = 399,861.90 × 89,068.47
  4. Step 4: Simplify right side
    266,560.83x = 35,615,086,144.81
  5. Step 5: Solve for x
    x = 35,615,086,144.81/266,560.83
  6. Step 6: Final answer
    x = 133,609.60

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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.