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Finding the Fourth Proportional to 253,387.36, 349,388.40 and 189,520.48

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Solution

The fourth proportional to 253,387.36, 349,388.40 and 189,520.48 is: 261,324.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,387.36 : 349,388.40 = 189,520.48 : x
  2. Step 2: Convert to fraction form
    253,387.36/349,388.40 = 189,520.48/x
  3. Step 3: Cross multiply
    253,387.36x = 349,388.40 × 189,520.48
  4. Step 4: Simplify right side
    253,387.36x = 66,216,257,274.43
  5. Step 5: Solve for x
    x = 66,216,257,274.43/253,387.36
  6. Step 6: Final answer
    x = 261,324.23

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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.