Home / 288,380.45-397,976.35-165,872.61

Finding the Fourth Proportional to 288,380.45, 397,976.35 and 165,872.61

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Solution

The fourth proportional to 288,380.45, 397,976.35 and 165,872.61 is: 228,910.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,380.45 : 397,976.35 = 165,872.61 : x
  2. Step 2: Convert to fraction form
    288,380.45/397,976.35 = 165,872.61/x
  3. Step 3: Cross multiply
    288,380.45x = 397,976.35 × 165,872.61
  4. Step 4: Simplify right side
    288,380.45x = 66,013,375,892.77
  5. Step 5: Solve for x
    x = 66,013,375,892.77/288,380.45
  6. Step 6: Final answer
    x = 228,910.72

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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.