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Finding the Fourth Proportional to 217,419.40, 326,129.10 and 217,419.40

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Solution

The fourth proportional to 217,419.40, 326,129.10 and 217,419.40 is: 326,129.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,419.40 : 326,129.10 = 217,419.40 : x
  2. Step 2: Convert to fraction form
    217,419.40/326,129.10 = 217,419.40/x
  3. Step 3: Cross multiply
    217,419.40x = 326,129.10 × 217,419.40
  4. Step 4: Simplify right side
    217,419.40x = 70,906,793,244.54
  5. Step 5: Solve for x
    x = 70,906,793,244.54/217,419.40
  6. Step 6: Final answer
    x = 326,129.10

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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.