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Finding the Fourth Proportional to 443,401.65, 665,102.48 and 266,108.85

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Solution

The fourth proportional to 443,401.65, 665,102.48 and 266,108.85 is: 399,163.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,401.65 : 665,102.48 = 266,108.85 : x
  2. Step 2: Convert to fraction form
    443,401.65/665,102.48 = 266,108.85/x
  3. Step 3: Cross multiply
    443,401.65x = 665,102.48 × 266,108.85
  4. Step 4: Simplify right side
    443,401.65x = 176,989,654,754.40
  5. Step 5: Solve for x
    x = 176,989,654,754.40/443,401.65
  6. Step 6: Final answer
    x = 399,163.28

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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.