Home / 221,569.20-332,402.40-109,303.20

Finding the Fourth Proportional to 221,569.20, 332,402.40 and 109,303.20

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Solution

The fourth proportional to 221,569.20, 332,402.40 and 109,303.20 is: 163,978.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,569.20 : 332,402.40 = 109,303.20 : x
  2. Step 2: Convert to fraction form
    221,569.20/332,402.40 = 109,303.20/x
  3. Step 3: Cross multiply
    221,569.20x = 332,402.40 × 109,303.20
  4. Step 4: Simplify right side
    221,569.20x = 36,332,646,007.68
  5. Step 5: Solve for x
    x = 36,332,646,007.68/221,569.20
  6. Step 6: Final answer
    x = 163,978.78

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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.