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Finding the Fourth Proportional to 215,695.88, 297,660.60 and 120,200.48

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Solution

The fourth proportional to 215,695.88, 297,660.60 and 120,200.48 is: 165,876.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,695.88 : 297,660.60 = 120,200.48 : x
  2. Step 2: Convert to fraction form
    215,695.88/297,660.60 = 120,200.48/x
  3. Step 3: Cross multiply
    215,695.88x = 297,660.60 × 120,200.48
  4. Step 4: Simplify right side
    215,695.88x = 35,778,946,997.09
  5. Step 5: Solve for x
    x = 35,778,946,997.09/215,695.88
  6. Step 6: Final answer
    x = 165,876.82

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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.