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Finding the Fourth Proportional to 217,433.80, 326,150.70 and 201,687.40

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Solution

The fourth proportional to 217,433.80, 326,150.70 and 201,687.40 is: 302,531.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,433.80 : 326,150.70 = 201,687.40 : x
  2. Step 2: Convert to fraction form
    217,433.80/326,150.70 = 201,687.40/x
  3. Step 3: Cross multiply
    217,433.80x = 326,150.70 × 201,687.40
  4. Step 4: Simplify right side
    217,433.80x = 65,780,486,691.18
  5. Step 5: Solve for x
    x = 65,780,486,691.18/217,433.80
  6. Step 6: Final answer
    x = 302,531.10

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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.