Home / 280,003.06-386,394.60-159,142.24

Finding the Fourth Proportional to 280,003.06, 386,394.60 and 159,142.24

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Solution

The fourth proportional to 280,003.06, 386,394.60 and 159,142.24 is: 219,610.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,003.06 : 386,394.60 = 159,142.24 : x
  2. Step 2: Convert to fraction form
    280,003.06/386,394.60 = 159,142.24/x
  3. Step 3: Cross multiply
    280,003.06x = 386,394.60 × 159,142.24
  4. Step 4: Simplify right side
    280,003.06x = 61,491,702,167.90
  5. Step 5: Solve for x
    x = 61,491,702,167.90/280,003.06
  6. Step 6: Final answer
    x = 219,610.82

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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.