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Finding the Fourth Proportional to 217,967.20, 326,950.80 and 189,098.80

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Solution

The fourth proportional to 217,967.20, 326,950.80 and 189,098.80 is: 283,648.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,967.20 : 326,950.80 = 189,098.80 : x
  2. Step 2: Convert to fraction form
    217,967.20/326,950.80 = 189,098.80/x
  3. Step 3: Cross multiply
    217,967.20x = 326,950.80 × 189,098.80
  4. Step 4: Simplify right side
    217,967.20x = 61,826,003,939.04
  5. Step 5: Solve for x
    x = 61,826,003,939.04/217,967.20
  6. Step 6: Final answer
    x = 283,648.20

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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.