Home / 215,769.30-297,774.45-120,275.70

Finding the Fourth Proportional to 215,769.30, 297,774.45 and 120,275.70

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Solution

The fourth proportional to 215,769.30, 297,774.45 and 120,275.70 is: 165,987.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,769.30 : 297,774.45 = 120,275.70 : x
  2. Step 2: Convert to fraction form
    215,769.30/297,774.45 = 120,275.70/x
  3. Step 3: Cross multiply
    215,769.30x = 297,774.45 × 120,275.70
  4. Step 4: Simplify right side
    215,769.30x = 35,815,030,415.87
  5. Step 5: Solve for x
    x = 35,815,030,415.87/215,769.30
  6. Step 6: Final answer
    x = 165,987.61

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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.