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Finding the Fourth Proportional to 215,755.78, 297,753.06 and 120,263.17

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Solution

The fourth proportional to 215,755.78, 297,753.06 and 120,263.17 is: 165,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,755.78 : 297,753.06 = 120,263.17 : x
  2. Step 2: Convert to fraction form
    215,755.78/297,753.06 = 120,263.17/x
  3. Step 3: Cross multiply
    215,755.78x = 297,753.06 × 120,263.17
  4. Step 4: Simplify right side
    215,755.78x = 35,808,726,872.80
  5. Step 5: Solve for x
    x = 35,808,726,872.80/215,755.78
  6. Step 6: Final answer
    x = 165,968.80

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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.