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Finding the Fourth Proportional to 215,074.78, 296,801.55 and 119,580.64

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Solution

The fourth proportional to 215,074.78, 296,801.55 and 119,580.64 is: 165,020.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,074.78 : 296,801.55 = 119,580.64 : x
  2. Step 2: Convert to fraction form
    215,074.78/296,801.55 = 119,580.64/x
  3. Step 3: Cross multiply
    215,074.78x = 296,801.55 × 119,580.64
  4. Step 4: Simplify right side
    215,074.78x = 35,491,719,301.99
  5. Step 5: Solve for x
    x = 35,491,719,301.99/215,074.78
  6. Step 6: Final answer
    x = 165,020.37

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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.