Home / 288,379.45-397,974.97-165,871.61

Finding the Fourth Proportional to 288,379.45, 397,974.97 and 165,871.61

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Solution

The fourth proportional to 288,379.45, 397,974.97 and 165,871.61 is: 228,909.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,379.45 : 397,974.97 = 165,871.61 : x
  2. Step 2: Convert to fraction form
    288,379.45/397,974.97 = 165,871.61/x
  3. Step 3: Cross multiply
    288,379.45x = 397,974.97 × 165,871.61
  4. Step 4: Simplify right side
    288,379.45x = 66,012,749,013.60
  5. Step 5: Solve for x
    x = 66,012,749,013.60/288,379.45
  6. Step 6: Final answer
    x = 228,909.34

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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.