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Finding the Fourth Proportional to 192,218.32, 288,430.92 and 79,975.96

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Solution

The fourth proportional to 192,218.32, 288,430.92 and 79,975.96 is: 120,006.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,218.32 : 288,430.92 = 79,975.96 : x
  2. Step 2: Convert to fraction form
    192,218.32/288,430.92 = 79,975.96/x
  3. Step 3: Cross multiply
    192,218.32x = 288,430.92 × 79,975.96
  4. Step 4: Simplify right side
    192,218.32x = 23,067,539,720.68
  5. Step 5: Solve for x
    x = 23,067,539,720.68/192,218.32
  6. Step 6: Final answer
    x = 120,006.98

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1.5x scale

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.