Home / 209,279.92-288,948.84-140,472.58

Finding the Fourth Proportional to 209,279.92, 288,948.84 and 140,472.58

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Solution

The fourth proportional to 209,279.92, 288,948.84 and 140,472.58 is: 193,947.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,279.92 : 288,948.84 = 140,472.58 : x
  2. Step 2: Convert to fraction form
    209,279.92/288,948.84 = 140,472.58/x
  3. Step 3: Cross multiply
    209,279.92x = 288,948.84 × 140,472.58
  4. Step 4: Simplify right side
    209,279.92x = 40,589,389,042.81
  5. Step 5: Solve for x
    x = 40,589,389,042.81/209,279.92
  6. Step 6: Final answer
    x = 193,947.84

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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.