Home / 214,958.24-322,436.40-81,807.20

Finding the Fourth Proportional to 214,958.24, 322,436.40 and 81,807.20

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Solution

The fourth proportional to 214,958.24, 322,436.40 and 81,807.20 is: 122,710.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,958.24 : 322,436.40 = 81,807.20 : x
  2. Step 2: Convert to fraction form
    214,958.24/322,436.40 = 81,807.20/x
  3. Step 3: Cross multiply
    214,958.24x = 322,436.40 × 81,807.20
  4. Step 4: Simplify right side
    214,958.24x = 26,377,619,062.08
  5. Step 5: Solve for x
    x = 26,377,619,062.08/214,958.24
  6. Step 6: Final answer
    x = 122,710.43

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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.