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Finding the Fourth Proportional to 215,757.11, 297,693.02 and 139,260

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Solution

The fourth proportional to 215,757.11, 297,693.02 and 139,260 is: 192,145.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,757.11 : 297,693.02 = 139,260 : x
  2. Step 2: Convert to fraction form
    215,757.11/297,693.02 = 139,260/x
  3. Step 3: Cross multiply
    215,757.11x = 297,693.02 × 139,260
  4. Step 4: Simplify right side
    215,757.11x = 41,456,729,965.20
  5. Step 5: Solve for x
    x = 41,456,729,965.20/215,757.11
  6. Step 6: Final answer
    x = 192,145.38

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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.