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Finding the Fourth Proportional to 443,275.88, 665,007.23 and 143,733.11

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Solution

The fourth proportional to 443,275.88, 665,007.23 and 143,733.11 is: 215,629.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,275.88 : 665,007.23 = 143,733.11 : x
  2. Step 2: Convert to fraction form
    443,275.88/665,007.23 = 143,733.11/x
  3. Step 3: Cross multiply
    443,275.88x = 665,007.23 × 143,733.11
  4. Step 4: Simplify right side
    443,275.88x = 95,583,557,340.39
  5. Step 5: Solve for x
    x = 95,583,557,340.39/443,275.88
  6. Step 6: Final answer
    x = 215,629.95

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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.