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Finding the Fourth Proportional to 217,419.80, 326,129.70 and 200,312.60

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Solution

The fourth proportional to 217,419.80, 326,129.70 and 200,312.60 is: 300,468.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,419.80 : 326,129.70 = 200,312.60 : x
  2. Step 2: Convert to fraction form
    217,419.80/326,129.70 = 200,312.60/x
  3. Step 3: Cross multiply
    217,419.80x = 326,129.70 × 200,312.60
  4. Step 4: Simplify right side
    217,419.80x = 65,327,888,144.22
  5. Step 5: Solve for x
    x = 65,327,888,144.22/217,419.80
  6. Step 6: Final answer
    x = 300,468.90

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1.5x scale

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.