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Finding the Fourth Proportional to 443,842.06, 665,930.70 and 266,472.70

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Solution

The fourth proportional to 443,842.06, 665,930.70 and 266,472.70 is: 399,809.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,842.06 : 665,930.70 = 266,472.70 : x
  2. Step 2: Convert to fraction form
    443,842.06/665,930.70 = 266,472.70/x
  3. Step 3: Cross multiply
    443,842.06x = 665,930.70 × 266,472.70
  4. Step 4: Simplify right side
    443,842.06x = 177,452,351,641.89
  5. Step 5: Solve for x
    x = 177,452,351,641.89/443,842.06
  6. Step 6: Final answer
    x = 399,809.68

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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.