Home / 209,275.20-288,799.20-113,781.28

Finding the Fourth Proportional to 209,275.20, 288,799.20 and 113,781.28

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Solution

The fourth proportional to 209,275.20, 288,799.20 and 113,781.28 is: 157,017.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,275.20 : 288,799.20 = 113,781.28 : x
  2. Step 2: Convert to fraction form
    209,275.20/288,799.20 = 113,781.28/x
  3. Step 3: Cross multiply
    209,275.20x = 288,799.20 × 113,781.28
  4. Step 4: Simplify right side
    209,275.20x = 32,859,942,638.98
  5. Step 5: Solve for x
    x = 32,859,942,638.98/209,275.20
  6. Step 6: Final answer
    x = 157,017.85

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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.