Home / 215,786.28-297,785.12-120,290.92

Finding the Fourth Proportional to 215,786.28, 297,785.12 and 120,290.92

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Solution

The fourth proportional to 215,786.28, 297,785.12 and 120,290.92 is: 166,001.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,786.28 : 297,785.12 = 120,290.92 : x
  2. Step 2: Convert to fraction form
    215,786.28/297,785.12 = 120,290.92/x
  3. Step 3: Cross multiply
    215,786.28x = 297,785.12 × 120,290.92
  4. Step 4: Simplify right side
    215,786.28x = 35,820,846,047.11
  5. Step 5: Solve for x
    x = 35,820,846,047.11/215,786.28
  6. Step 6: Final answer
    x = 166,001.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.