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Finding the Fourth Proportional to 230,345.90, 345,546.53 and 217,748.78

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Solution

The fourth proportional to 230,345.90, 345,546.53 and 217,748.78 is: 326,649.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,345.90 : 345,546.53 = 217,748.78 : x
  2. Step 2: Convert to fraction form
    230,345.90/345,546.53 = 217,748.78/x
  3. Step 3: Cross multiply
    230,345.90x = 345,546.53 × 217,748.78
  4. Step 4: Simplify right side
    230,345.90x = 75,242,332,524.26
  5. Step 5: Solve for x
    x = 75,242,332,524.26/230,345.90
  6. Step 6: Final answer
    x = 326,649.33

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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.