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Finding the Fourth Proportional to 253,521.33, 349,863.56 and 138,798.03

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Solution

The fourth proportional to 253,521.33, 349,863.56 and 138,798.03 is: 191,543.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,521.33 : 349,863.56 = 138,798.03 : x
  2. Step 2: Convert to fraction form
    253,521.33/349,863.56 = 138,798.03/x
  3. Step 3: Cross multiply
    253,521.33x = 349,863.56 × 138,798.03
  4. Step 4: Simplify right side
    253,521.33x = 48,560,372,896.79
  5. Step 5: Solve for x
    x = 48,560,372,896.79/253,521.33
  6. Step 6: Final answer
    x = 191,543.54

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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.