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Finding the Fourth Proportional to 217,414.80, 326,122.20 and 141,307.20

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Solution

The fourth proportional to 217,414.80, 326,122.20 and 141,307.20 is: 211,960.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,414.80 : 326,122.20 = 141,307.20 : x
  2. Step 2: Convert to fraction form
    217,414.80/326,122.20 = 141,307.20/x
  3. Step 3: Cross multiply
    217,414.80x = 326,122.20 × 141,307.20
  4. Step 4: Simplify right side
    217,414.80x = 46,083,414,939.84
  5. Step 5: Solve for x
    x = 46,083,414,939.84/217,414.80
  6. Step 6: Final answer
    x = 211,960.80

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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.