Home / 280,822.30-421,233.45-156,163.30

Finding the Fourth Proportional to 280,822.30, 421,233.45 and 156,163.30

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Solution

The fourth proportional to 280,822.30, 421,233.45 and 156,163.30 is: 234,244.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,822.30 : 421,233.45 = 156,163.30 : x
  2. Step 2: Convert to fraction form
    280,822.30/421,233.45 = 156,163.30/x
  3. Step 3: Cross multiply
    280,822.30x = 421,233.45 × 156,163.30
  4. Step 4: Simplify right side
    280,822.30x = 65,781,205,622.39
  5. Step 5: Solve for x
    x = 65,781,205,622.39/280,822.30
  6. Step 6: Final answer
    x = 234,244.95

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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.