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Finding the Fourth Proportional to 217,213.40, 325,820.10 and 197,967.80

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Solution

The fourth proportional to 217,213.40, 325,820.10 and 197,967.80 is: 296,951.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,213.40 : 325,820.10 = 197,967.80 : x
  2. Step 2: Convert to fraction form
    217,213.40/325,820.10 = 197,967.80/x
  3. Step 3: Cross multiply
    217,213.40x = 325,820.10 × 197,967.80
  4. Step 4: Simplify right side
    217,213.40x = 64,501,888,392.78
  5. Step 5: Solve for x
    x = 64,501,888,392.78/217,213.40
  6. Step 6: Final answer
    x = 296,951.70

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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.