Home / 278,517.12-384,352.68-151,191.80

Finding the Fourth Proportional to 278,517.12, 384,352.68 and 151,191.80

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Solution

The fourth proportional to 278,517.12, 384,352.68 and 151,191.80 is: 208,644.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,517.12 : 384,352.68 = 151,191.80 : x
  2. Step 2: Convert to fraction form
    278,517.12/384,352.68 = 151,191.80/x
  3. Step 3: Cross multiply
    278,517.12x = 384,352.68 × 151,191.80
  4. Step 4: Simplify right side
    278,517.12x = 58,110,973,524.02
  5. Step 5: Solve for x
    x = 58,110,973,524.02/278,517.12
  6. Step 6: Final answer
    x = 208,644.17

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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.