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Finding the Fourth Proportional to 215,750.28, 297,745.47 and 120,257.66

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Solution

The fourth proportional to 215,750.28, 297,745.47 and 120,257.66 is: 165,961.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,750.28 : 297,745.47 = 120,257.66 : x
  2. Step 2: Convert to fraction form
    215,750.28/297,745.47 = 120,257.66/x
  3. Step 3: Cross multiply
    215,750.28x = 297,745.47 × 120,257.66
  4. Step 4: Simplify right side
    215,750.28x = 35,806,174,242.16
  5. Step 5: Solve for x
    x = 35,806,174,242.16/215,750.28
  6. Step 6: Final answer
    x = 165,961.19

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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.