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Finding the Fourth Proportional to 443,834.80, 665,363.40 and 266,153.20

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Solution

The fourth proportional to 443,834.80, 665,363.40 and 266,153.20 is: 398,996.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,834.80 : 665,363.40 = 266,153.20 : x
  2. Step 2: Convert to fraction form
    443,834.80/665,363.40 = 266,153.20/x
  3. Step 3: Cross multiply
    443,834.80x = 665,363.40 × 266,153.20
  4. Step 4: Simplify right side
    443,834.80x = 177,088,598,072.88
  5. Step 5: Solve for x
    x = 177,088,598,072.88/443,834.80
  6. Step 6: Final answer
    x = 398,996.65

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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.