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Finding the Fourth Proportional to 538,793.36, 743,389 and 306,217.04

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Solution

The fourth proportional to 538,793.36, 743,389 and 306,217.04 is: 422,496.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,793.36 : 743,389 = 306,217.04 : x
  2. Step 2: Convert to fraction form
    538,793.36/743,389 = 306,217.04/x
  3. Step 3: Cross multiply
    538,793.36x = 743,389 × 306,217.04
  4. Step 4: Simplify right side
    538,793.36x = 227,638,379,148.56
  5. Step 5: Solve for x
    x = 227,638,379,148.56/538,793.36
  6. Step 6: Final answer
    x = 422,496.63

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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.