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Finding the Fourth Proportional to 253,449, 349,754.22 and 138,727.62

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Solution

The fourth proportional to 253,449, 349,754.22 and 138,727.62 is: 191,441.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,449 : 349,754.22 = 138,727.62 : x
  2. Step 2: Convert to fraction form
    253,449/349,754.22 = 138,727.62/x
  3. Step 3: Cross multiply
    253,449x = 349,754.22 × 138,727.62
  4. Step 4: Simplify right side
    253,449x = 48,520,570,525.56
  5. Step 5: Solve for x
    x = 48,520,570,525.56/253,449
  6. Step 6: Final answer
    x = 191,441.16

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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.