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Finding the Fourth Proportional to 215,354.97, 297,186.89 and 119,861.70

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Solution

The fourth proportional to 215,354.97, 297,186.89 and 119,861.70 is: 165,407.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,354.97 : 297,186.89 = 119,861.70 : x
  2. Step 2: Convert to fraction form
    215,354.97/297,186.89 = 119,861.70/x
  3. Step 3: Cross multiply
    215,354.97x = 297,186.89 × 119,861.70
  4. Step 4: Simplify right side
    215,354.97x = 35,621,325,253.80
  5. Step 5: Solve for x
    x = 35,621,325,253.80/215,354.97
  6. Step 6: Final answer
    x = 165,407.49

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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.