Home / 221,331.70-331,560.15-121,312.90

Finding the Fourth Proportional to 221,331.70, 331,560.15 and 121,312.90

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Solution

The fourth proportional to 221,331.70, 331,560.15 and 121,312.90 is: 181,729.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,331.70 : 331,560.15 = 121,312.90 : x
  2. Step 2: Convert to fraction form
    221,331.70/331,560.15 = 121,312.90/x
  3. Step 3: Cross multiply
    221,331.70x = 331,560.15 × 121,312.90
  4. Step 4: Simplify right side
    221,331.70x = 40,222,523,320.94
  5. Step 5: Solve for x
    x = 40,222,523,320.94/221,331.70
  6. Step 6: Final answer
    x = 181,729.61

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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.