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Finding the Fourth Proportional to 321,515.28, 443,650.32 and 176,282.86

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Solution

The fourth proportional to 321,515.28, 443,650.32 and 176,282.86 is: 243,248.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,515.28 : 443,650.32 = 176,282.86 : x
  2. Step 2: Convert to fraction form
    321,515.28/443,650.32 = 176,282.86/x
  3. Step 3: Cross multiply
    321,515.28x = 443,650.32 × 176,282.86
  4. Step 4: Simplify right side
    321,515.28x = 78,207,947,249.52
  5. Step 5: Solve for x
    x = 78,207,947,249.52/321,515.28
  6. Step 6: Final answer
    x = 243,248.00

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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.