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Finding the Fourth Proportional to 443,869.30, 665,971.55 and 266,499.95

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Solution

The fourth proportional to 443,869.30, 665,971.55 and 266,499.95 is: 399,850.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,869.30 : 665,971.55 = 266,499.95 : x
  2. Step 2: Convert to fraction form
    443,869.30/665,971.55 = 266,499.95/x
  3. Step 3: Cross multiply
    443,869.30x = 665,971.55 × 266,499.95
  4. Step 4: Simplify right side
    443,869.30x = 177,481,383,443.92
  5. Step 5: Solve for x
    x = 177,481,383,443.92/443,869.30
  6. Step 6: Final answer
    x = 399,850.55

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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.