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Finding the Fourth Proportional to 443,343.43, 665,108.68 and 143,800.75

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Solution

The fourth proportional to 443,343.43, 665,108.68 and 143,800.75 is: 215,731.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,343.43 : 665,108.68 = 143,800.75 : x
  2. Step 2: Convert to fraction form
    443,343.43/665,108.68 = 143,800.75/x
  3. Step 3: Cross multiply
    443,343.43x = 665,108.68 × 143,800.75
  4. Step 4: Simplify right side
    443,343.43x = 95,643,126,296.51
  5. Step 5: Solve for x
    x = 95,643,126,296.51/443,343.43
  6. Step 6: Final answer
    x = 215,731.46

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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.