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Finding the Fourth Proportional to 215,071.52, 322,541.68 and 57,279.48

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Solution

The fourth proportional to 215,071.52, 322,541.68 and 57,279.48 is: 85,901.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,071.52 : 322,541.68 = 57,279.48 : x
  2. Step 2: Convert to fraction form
    215,071.52/322,541.68 = 57,279.48/x
  3. Step 3: Cross multiply
    215,071.52x = 322,541.68 × 57,279.48
  4. Step 4: Simplify right side
    215,071.52x = 18,475,019,708.73
  5. Step 5: Solve for x
    x = 18,475,019,708.73/215,071.52
  6. Step 6: Final answer
    x = 85,901.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.