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Finding the Fourth Proportional to 443,339.50, 665,102.76 and 143,796.81

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Solution

The fourth proportional to 443,339.50, 665,102.76 and 143,796.81 is: 215,725.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,339.50 : 665,102.76 = 143,796.81 : x
  2. Step 2: Convert to fraction form
    443,339.50/665,102.76 = 143,796.81/x
  3. Step 3: Cross multiply
    443,339.50x = 665,102.76 × 143,796.81
  4. Step 4: Simplify right side
    443,339.50x = 95,639,654,491.21
  5. Step 5: Solve for x
    x = 95,639,654,491.21/443,339.50
  6. Step 6: Final answer
    x = 215,725.55

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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.