Home / 257,824.08-386,803.20-80,334

Finding the Fourth Proportional to 257,824.08, 386,803.20 and 80,334

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Solution

The fourth proportional to 257,824.08, 386,803.20 and 80,334 is: 120,521.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,824.08 : 386,803.20 = 80,334 : x
  2. Step 2: Convert to fraction form
    257,824.08/386,803.20 = 80,334/x
  3. Step 3: Cross multiply
    257,824.08x = 386,803.20 × 80,334
  4. Step 4: Simplify right side
    257,824.08x = 31,073,448,268.80
  5. Step 5: Solve for x
    x = 31,073,448,268.80/257,824.08
  6. Step 6: Final answer
    x = 120,521.90

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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.