Home / 321,934.10-482,901.15-85,313.30

Finding the Fourth Proportional to 321,934.10, 482,901.15 and 85,313.30

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Solution

The fourth proportional to 321,934.10, 482,901.15 and 85,313.30 is: 127,969.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,934.10 : 482,901.15 = 85,313.30 : x
  2. Step 2: Convert to fraction form
    321,934.10/482,901.15 = 85,313.30/x
  3. Step 3: Cross multiply
    321,934.10x = 482,901.15 × 85,313.30
  4. Step 4: Simplify right side
    321,934.10x = 41,197,890,680.30
  5. Step 5: Solve for x
    x = 41,197,890,680.30/321,934.10
  6. Step 6: Final answer
    x = 127,969.95

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Similar ratio
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1.5x scale

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.