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Finding the Fourth Proportional to 443,342.74, 665,107.64 and 143,800.06

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Solution

The fourth proportional to 443,342.74, 665,107.64 and 143,800.06 is: 215,730.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,342.74 : 665,107.64 = 143,800.06 : x
  2. Step 2: Convert to fraction form
    443,342.74/665,107.64 = 143,800.06/x
  3. Step 3: Cross multiply
    443,342.74x = 665,107.64 × 143,800.06
  4. Step 4: Simplify right side
    443,342.74x = 95,642,517,819.46
  5. Step 5: Solve for x
    x = 95,642,517,819.46/443,342.74
  6. Step 6: Final answer
    x = 215,730.43

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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.