Home / 259,733.80-389,320.86-126,703.72

Finding the Fourth Proportional to 259,733.80, 389,320.86 and 126,703.72

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Solution

The fourth proportional to 259,733.80, 389,320.86 and 126,703.72 is: 189,919.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,733.80 : 389,320.86 = 126,703.72 : x
  2. Step 2: Convert to fraction form
    259,733.80/389,320.86 = 126,703.72/x
  3. Step 3: Cross multiply
    259,733.80x = 389,320.86 × 126,703.72
  4. Step 4: Simplify right side
    259,733.80x = 49,328,401,235.60
  5. Step 5: Solve for x
    x = 49,328,401,235.60/259,733.80
  6. Step 6: Final answer
    x = 189,919.07

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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.