Home / 215,504.55-297,399.20-120,013.65

Finding the Fourth Proportional to 215,504.55, 297,399.20 and 120,013.65

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Solution

The fourth proportional to 215,504.55, 297,399.20 and 120,013.65 is: 165,620.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,504.55 : 297,399.20 = 120,013.65 : x
  2. Step 2: Convert to fraction form
    215,504.55/297,399.20 = 120,013.65/x
  3. Step 3: Cross multiply
    215,504.55x = 297,399.20 × 120,013.65
  4. Step 4: Simplify right side
    215,504.55x = 35,691,962,899.01
  5. Step 5: Solve for x
    x = 35,691,962,899.01/215,504.55
  6. Step 6: Final answer
    x = 165,620.46

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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.