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Finding the Fourth Proportional to 217,798.88, 326,613.84 and 84,661.52

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Solution

The fourth proportional to 217,798.88, 326,613.84 and 84,661.52 is: 126,959.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,798.88 : 326,613.84 = 84,661.52 : x
  2. Step 2: Convert to fraction form
    217,798.88/326,613.84 = 84,661.52/x
  3. Step 3: Cross multiply
    217,798.88x = 326,613.84 × 84,661.52
  4. Step 4: Simplify right side
    217,798.88x = 27,651,624,147.44
  5. Step 5: Solve for x
    x = 27,651,624,147.44/217,798.88
  6. Step 6: Final answer
    x = 126,959.44

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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.