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Finding the Fourth Proportional to 245,213.56, 338,425.98 and 149,699.80

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Solution

The fourth proportional to 245,213.56, 338,425.98 and 149,699.80 is: 206,604.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,213.56 : 338,425.98 = 149,699.80 : x
  2. Step 2: Convert to fraction form
    245,213.56/338,425.98 = 149,699.80/x
  3. Step 3: Cross multiply
    245,213.56x = 338,425.98 × 149,699.80
  4. Step 4: Simplify right side
    245,213.56x = 50,662,301,520.80
  5. Step 5: Solve for x
    x = 50,662,301,520.80/245,213.56
  6. Step 6: Final answer
    x = 206,604.81

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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.