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Finding the Fourth Proportional to 217,967.70, 326,951.55 and 189,099.30

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Solution

The fourth proportional to 217,967.70, 326,951.55 and 189,099.30 is: 283,648.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,967.70 : 326,951.55 = 189,099.30 : x
  2. Step 2: Convert to fraction form
    217,967.70/326,951.55 = 189,099.30/x
  3. Step 3: Cross multiply
    217,967.70x = 326,951.55 × 189,099.30
  4. Step 4: Simplify right side
    217,967.70x = 61,826,309,238.92
  5. Step 5: Solve for x
    x = 61,826,309,238.92/217,967.70
  6. Step 6: Final answer
    x = 283,648.95

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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.