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Finding the Fourth Proportional to 217,479.48, 326,249.64 and 67,730.64

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Solution

The fourth proportional to 217,479.48, 326,249.64 and 67,730.64 is: 101,605.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,479.48 : 326,249.64 = 67,730.64 : x
  2. Step 2: Convert to fraction form
    217,479.48/326,249.64 = 67,730.64/x
  3. Step 3: Cross multiply
    217,479.48x = 326,249.64 × 67,730.64
  4. Step 4: Simplify right side
    217,479.48x = 22,097,096,916.97
  5. Step 5: Solve for x
    x = 22,097,096,916.97/217,479.48
  6. Step 6: Final answer
    x = 101,605.43

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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.