Home / 215,725.40-323,780.10-126,867.80

Finding the Fourth Proportional to 215,725.40, 323,780.10 and 126,867.80

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Solution

The fourth proportional to 215,725.40, 323,780.10 and 126,867.80 is: 190,414.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,725.40 : 323,780.10 = 126,867.80 : x
  2. Step 2: Convert to fraction form
    215,725.40/323,780.10 = 126,867.80/x
  3. Step 3: Cross multiply
    215,725.40x = 323,780.10 × 126,867.80
  4. Step 4: Simplify right side
    215,725.40x = 41,077,268,970.78
  5. Step 5: Solve for x
    x = 41,077,268,970.78/215,725.40
  6. Step 6: Final answer
    x = 190,414.61

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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.