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Finding the Fourth Proportional to 215,286.97, 322,946.85 and 65,540.06

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Solution

The fourth proportional to 215,286.97, 322,946.85 and 65,540.06 is: 98,315.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,286.97 : 322,946.85 = 65,540.06 : x
  2. Step 2: Convert to fraction form
    215,286.97/322,946.85 = 65,540.06/x
  3. Step 3: Cross multiply
    215,286.97x = 322,946.85 × 65,540.06
  4. Step 4: Simplify right side
    215,286.97x = 21,165,955,925.81
  5. Step 5: Solve for x
    x = 21,165,955,925.81/215,286.97
  6. Step 6: Final answer
    x = 98,315.08

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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.