Home / 218,694.20-301,854.29-142,403.72

Finding the Fourth Proportional to 218,694.20, 301,854.29 and 142,403.72

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Solution

The fourth proportional to 218,694.20, 301,854.29 and 142,403.72 is: 196,553.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,694.20 : 301,854.29 = 142,403.72 : x
  2. Step 2: Convert to fraction form
    218,694.20/301,854.29 = 142,403.72/x
  3. Step 3: Cross multiply
    218,694.20x = 301,854.29 × 142,403.72
  4. Step 4: Simplify right side
    218,694.20x = 42,985,171,572.67
  5. Step 5: Solve for x
    x = 42,985,171,572.67/218,694.20
  6. Step 6: Final answer
    x = 196,553.78

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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.