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Finding the Fourth Proportional to 253,539.68, 349,871.45 and 138,796.34

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Solution

The fourth proportional to 253,539.68, 349,871.45 and 138,796.34 is: 191,531.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,539.68 : 349,871.45 = 138,796.34 : x
  2. Step 2: Convert to fraction form
    253,539.68/349,871.45 = 138,796.34/x
  3. Step 3: Cross multiply
    253,539.68x = 349,871.45 × 138,796.34
  4. Step 4: Simplify right side
    253,539.68x = 48,560,875,466.35
  5. Step 5: Solve for x
    x = 48,560,875,466.35/253,539.68
  6. Step 6: Final answer
    x = 191,531.66

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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.