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Finding the Fourth Proportional to 311,575.92, 429,974.22 and 168,335.52

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Solution

The fourth proportional to 311,575.92, 429,974.22 and 168,335.52 is: 232,302.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,575.92 : 429,974.22 = 168,335.52 : x
  2. Step 2: Convert to fraction form
    311,575.92/429,974.22 = 168,335.52/x
  3. Step 3: Cross multiply
    311,575.92x = 429,974.22 × 168,335.52
  4. Step 4: Simplify right side
    311,575.92x = 72,379,933,910.29
  5. Step 5: Solve for x
    x = 72,379,933,910.29/311,575.92
  6. Step 6: Final answer
    x = 232,302.72

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1.5x scale

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.