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Finding the Fourth Proportional to 393,310.22, 542,765.02 and 223,544.34

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Solution

The fourth proportional to 393,310.22, 542,765.02 and 223,544.34 is: 308,489.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,310.22 : 542,765.02 = 223,544.34 : x
  2. Step 2: Convert to fraction form
    393,310.22/542,765.02 = 223,544.34/x
  3. Step 3: Cross multiply
    393,310.22x = 542,765.02 × 223,544.34
  4. Step 4: Simplify right side
    393,310.22x = 121,332,048,170.99
  5. Step 5: Solve for x
    x = 121,332,048,170.99/393,310.22
  6. Step 6: Final answer
    x = 308,489.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.