Home / 217,815.40-326,723.10-198,132.40

Finding the Fourth Proportional to 217,815.40, 326,723.10 and 198,132.40

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Solution

The fourth proportional to 217,815.40, 326,723.10 and 198,132.40 is: 297,198.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,815.40 : 326,723.10 = 198,132.40 : x
  2. Step 2: Convert to fraction form
    217,815.40/326,723.10 = 198,132.40/x
  3. Step 3: Cross multiply
    217,815.40x = 326,723.10 × 198,132.40
  4. Step 4: Simplify right side
    217,815.40x = 64,734,431,938.44
  5. Step 5: Solve for x
    x = 64,734,431,938.44/217,815.40
  6. Step 6: Final answer
    x = 297,198.60

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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.