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Finding the Fourth Proportional to 443,343.24, 665,108.39 and 143,800.56

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Solution

The fourth proportional to 443,343.24, 665,108.39 and 143,800.56 is: 215,731.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,343.24 : 665,108.39 = 143,800.56 : x
  2. Step 2: Convert to fraction form
    443,343.24/665,108.39 = 143,800.56/x
  3. Step 3: Cross multiply
    443,343.24x = 665,108.39 × 143,800.56
  4. Step 4: Simplify right side
    443,343.24x = 95,642,959,302.20
  5. Step 5: Solve for x
    x = 95,642,959,302.20/443,343.24
  6. Step 6: Final answer
    x = 215,731.18

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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.