Home / 215,769.80-297,775.14-120,276.20

Finding the Fourth Proportional to 215,769.80, 297,775.14 and 120,276.20

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Solution

The fourth proportional to 215,769.80, 297,775.14 and 120,276.20 is: 165,988.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,769.80 : 297,775.14 = 120,276.20 : x
  2. Step 2: Convert to fraction form
    215,769.80/297,775.14 = 120,276.20/x
  3. Step 3: Cross multiply
    215,769.80x = 297,775.14 × 120,276.20
  4. Step 4: Simplify right side
    215,769.80x = 35,815,262,293.67
  5. Step 5: Solve for x
    x = 35,815,262,293.67/215,769.80
  6. Step 6: Final answer
    x = 165,988.30

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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.