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Finding the Fourth Proportional to 212,218.67, 292,867.31 and 116,727.87

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Solution

The fourth proportional to 212,218.67, 292,867.31 and 116,727.87 is: 161,087.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,218.67 : 292,867.31 = 116,727.87 : x
  2. Step 2: Convert to fraction form
    212,218.67/292,867.31 = 116,727.87/x
  3. Step 3: Cross multiply
    212,218.67x = 292,867.31 × 116,727.87
  4. Step 4: Simplify right side
    212,218.67x = 34,185,777,288.93
  5. Step 5: Solve for x
    x = 34,185,777,288.93/212,218.67
  6. Step 6: Final answer
    x = 161,087.51

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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.