Home / 280,098.31-420,166.61-80,403.34

Finding the Fourth Proportional to 280,098.31, 420,166.61 and 80,403.34

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Solution

The fourth proportional to 280,098.31, 420,166.61 and 80,403.34 is: 120,610.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,098.31 : 420,166.61 = 80,403.34 : x
  2. Step 2: Convert to fraction form
    280,098.31/420,166.61 = 80,403.34/x
  3. Step 3: Cross multiply
    280,098.31x = 420,166.61 × 80,403.34
  4. Step 4: Simplify right side
    280,098.31x = 33,782,798,800.48
  5. Step 5: Solve for x
    x = 33,782,798,800.48/280,098.31
  6. Step 6: Final answer
    x = 120,610.51

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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.