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Finding the Fourth Proportional to 321,660.34, 443,882.70 and 185,689.69

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Solution

The fourth proportional to 321,660.34, 443,882.70 and 185,689.69 is: 256,246.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,660.34 : 443,882.70 = 185,689.69 : x
  2. Step 2: Convert to fraction form
    321,660.34/443,882.70 = 185,689.69/x
  3. Step 3: Cross multiply
    321,660.34x = 443,882.70 × 185,689.69
  4. Step 4: Simplify right side
    321,660.34x = 82,424,439,849.66
  5. Step 5: Solve for x
    x = 82,424,439,849.66/321,660.34
  6. Step 6: Final answer
    x = 256,246.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.