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Finding the Fourth Proportional to 215,518.74, 297,393.49 and 132,719.56

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Solution

The fourth proportional to 215,518.74, 297,393.49 and 132,719.56 is: 183,139.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,518.74 : 297,393.49 = 132,719.56 : x
  2. Step 2: Convert to fraction form
    215,518.74/297,393.49 = 132,719.56/x
  3. Step 3: Cross multiply
    215,518.74x = 297,393.49 × 132,719.56
  4. Step 4: Simplify right side
    215,518.74x = 39,469,932,476.07
  5. Step 5: Solve for x
    x = 39,469,932,476.07/215,518.74
  6. Step 6: Final answer
    x = 183,139.21

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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.