Home / 257,964.39-386,992.08-80,427.24

Finding the Fourth Proportional to 257,964.39, 386,992.08 and 80,427.24

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Solution

The fourth proportional to 257,964.39, 386,992.08 and 80,427.24 is: 120,655.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,964.39 : 386,992.08 = 80,427.24 : x
  2. Step 2: Convert to fraction form
    257,964.39/386,992.08 = 80,427.24/x
  3. Step 3: Cross multiply
    257,964.39x = 386,992.08 × 80,427.24
  4. Step 4: Simplify right side
    257,964.39x = 31,124,704,896.26
  5. Step 5: Solve for x
    x = 31,124,704,896.26/257,964.39
  6. Step 6: Final answer
    x = 120,655.04

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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.