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Finding the Fourth Proportional to 253,115.49, 349,198.92 and 145,627.68

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Solution

The fourth proportional to 253,115.49, 349,198.92 and 145,627.68 is: 200,908.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,115.49 : 349,198.92 = 145,627.68 : x
  2. Step 2: Convert to fraction form
    253,115.49/349,198.92 = 145,627.68/x
  3. Step 3: Cross multiply
    253,115.49x = 349,198.92 × 145,627.68
  4. Step 4: Simplify right side
    253,115.49x = 50,853,028,578.11
  5. Step 5: Solve for x
    x = 50,853,028,578.11/253,115.49
  6. Step 6: Final answer
    x = 200,908.40

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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.