Home / 259,738.80-389,608.20-243,992.40

Finding the Fourth Proportional to 259,738.80, 389,608.20 and 243,992.40

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Solution

The fourth proportional to 259,738.80, 389,608.20 and 243,992.40 is: 365,988.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,738.80 : 389,608.20 = 243,992.40 : x
  2. Step 2: Convert to fraction form
    259,738.80/389,608.20 = 243,992.40/x
  3. Step 3: Cross multiply
    259,738.80x = 389,608.20 × 243,992.40
  4. Step 4: Simplify right side
    259,738.80x = 95,061,439,777.68
  5. Step 5: Solve for x
    x = 95,061,439,777.68/259,738.80
  6. Step 6: Final answer
    x = 365,988.60

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Similar ratio
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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.