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Finding the Fourth Proportional to 215,718.95, 323,578.44 and 65,959.22

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Solution

The fourth proportional to 215,718.95, 323,578.44 and 65,959.22 is: 98,938.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,718.95 : 323,578.44 = 65,959.22 : x
  2. Step 2: Convert to fraction form
    215,718.95/323,578.44 = 65,959.22/x
  3. Step 3: Cross multiply
    215,718.95x = 323,578.44 × 65,959.22
  4. Step 4: Simplify right side
    215,718.95x = 21,342,982,320.16
  5. Step 5: Solve for x
    x = 21,342,982,320.16/215,718.95
  6. Step 6: Final answer
    x = 98,938.84

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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.