Home / 259,756.28-389,320.90-126,436.76

Finding the Fourth Proportional to 259,756.28, 389,320.90 and 126,436.76

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Solution

The fourth proportional to 259,756.28, 389,320.90 and 126,436.76 is: 189,502.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,756.28 : 389,320.90 = 126,436.76 : x
  2. Step 2: Convert to fraction form
    259,756.28/389,320.90 = 126,436.76/x
  3. Step 3: Cross multiply
    259,756.28x = 389,320.90 × 126,436.76
  4. Step 4: Simplify right side
    259,756.28x = 49,224,473,196.28
  5. Step 5: Solve for x
    x = 49,224,473,196.28/259,756.28
  6. Step 6: Final answer
    x = 189,502.53

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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.