Home / 305,890.20-422,116.75-169,932.70

Finding the Fourth Proportional to 305,890.20, 422,116.75 and 169,932.70

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Solution

The fourth proportional to 305,890.20, 422,116.75 and 169,932.70 is: 234,500.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,890.20 : 422,116.75 = 169,932.70 : x
  2. Step 2: Convert to fraction form
    305,890.20/422,116.75 = 169,932.70/x
  3. Step 3: Cross multiply
    305,890.20x = 422,116.75 × 169,932.70
  4. Step 4: Simplify right side
    305,890.20x = 71,731,439,042.73
  5. Step 5: Solve for x
    x = 71,731,439,042.73/305,890.20
  6. Step 6: Final answer
    x = 234,500.61

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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.