Home / 268,217.60-402,326.40-81,229.10

Finding the Fourth Proportional to 268,217.60, 402,326.40 and 81,229.10

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Solution

The fourth proportional to 268,217.60, 402,326.40 and 81,229.10 is: 121,843.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,217.60 : 402,326.40 = 81,229.10 : x
  2. Step 2: Convert to fraction form
    268,217.60/402,326.40 = 81,229.10/x
  3. Step 3: Cross multiply
    268,217.60x = 402,326.40 × 81,229.10
  4. Step 4: Simplify right side
    268,217.60x = 32,680,611,378.24
  5. Step 5: Solve for x
    x = 32,680,611,378.24/268,217.60
  6. Step 6: Final answer
    x = 121,843.65

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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.