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Finding the Fourth Proportional to 216,093.65, 323,972.61 and 140,031.51

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Solution

The fourth proportional to 216,093.65, 323,972.61 and 140,031.51 is: 209,938.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,093.65 : 323,972.61 = 140,031.51 : x
  2. Step 2: Convert to fraction form
    216,093.65/323,972.61 = 140,031.51/x
  3. Step 3: Cross multiply
    216,093.65x = 323,972.61 × 140,031.51
  4. Step 4: Simplify right side
    216,093.65x = 45,366,373,735.78
  5. Step 5: Solve for x
    x = 45,366,373,735.78/216,093.65
  6. Step 6: Final answer
    x = 209,938.49

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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.