Home / 215,521.09-297,428.32-120,027.78

Finding the Fourth Proportional to 215,521.09, 297,428.32 and 120,027.78

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Solution

The fourth proportional to 215,521.09, 297,428.32 and 120,027.78 is: 165,643.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,521.09 : 297,428.32 = 120,027.78 : x
  2. Step 2: Convert to fraction form
    215,521.09/297,428.32 = 120,027.78/x
  3. Step 3: Cross multiply
    215,521.09x = 297,428.32 × 120,027.78
  4. Step 4: Simplify right side
    215,521.09x = 35,699,660,958.73
  5. Step 5: Solve for x
    x = 35,699,660,958.73/215,521.09
  6. Step 6: Final answer
    x = 165,643.47

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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.