Home / 259,790.20-389,685.30-207,302.20

Finding the Fourth Proportional to 259,790.20, 389,685.30 and 207,302.20

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Solution

The fourth proportional to 259,790.20, 389,685.30 and 207,302.20 is: 310,953.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,790.20 : 389,685.30 = 207,302.20 : x
  2. Step 2: Convert to fraction form
    259,790.20/389,685.30 = 207,302.20/x
  3. Step 3: Cross multiply
    259,790.20x = 389,685.30 × 207,302.20
  4. Step 4: Simplify right side
    259,790.20x = 80,782,619,997.66
  5. Step 5: Solve for x
    x = 80,782,619,997.66/259,790.20
  6. Step 6: Final answer
    x = 310,953.30

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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.