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Finding the Fourth Proportional to 443,744.80, 665,228.40 and 266,063.20

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Solution

The fourth proportional to 443,744.80, 665,228.40 and 266,063.20 is: 398,861.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,744.80 : 665,228.40 = 266,063.20 : x
  2. Step 2: Convert to fraction form
    443,744.80/665,228.40 = 266,063.20/x
  3. Step 3: Cross multiply
    443,744.80x = 665,228.40 × 266,063.20
  4. Step 4: Simplify right side
    443,744.80x = 176,992,796,834.88
  5. Step 5: Solve for x
    x = 176,992,796,834.88/443,744.80
  6. Step 6: Final answer
    x = 398,861.68

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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.