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Finding the Fourth Proportional to 443,339.49, 665,102.71 and 143,796.77

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Solution

The fourth proportional to 443,339.49, 665,102.71 and 143,796.77 is: 215,725.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,339.49 : 665,102.71 = 143,796.77 : x
  2. Step 2: Convert to fraction form
    443,339.49/665,102.71 = 143,796.77/x
  3. Step 3: Cross multiply
    443,339.49x = 665,102.71 × 143,796.77
  4. Step 4: Simplify right side
    443,339.49x = 95,639,620,764.61
  5. Step 5: Solve for x
    x = 95,639,620,764.61/443,339.49
  6. Step 6: Final answer
    x = 215,725.47

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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.