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Finding the Fourth Proportional to 253,027.88, 349,186.55 and 138,304

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Solution

The fourth proportional to 253,027.88, 349,186.55 and 138,304 is: 190,863.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,027.88 : 349,186.55 = 138,304 : x
  2. Step 2: Convert to fraction form
    253,027.88/349,186.55 = 138,304/x
  3. Step 3: Cross multiply
    253,027.88x = 349,186.55 × 138,304
  4. Step 4: Simplify right side
    253,027.88x = 48,293,896,611.20
  5. Step 5: Solve for x
    x = 48,293,896,611.20/253,027.88
  6. Step 6: Final answer
    x = 190,863.93

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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.