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Finding the Fourth Proportional to 253,365.44, 349,644.30 and 138,644.10

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Solution

The fourth proportional to 253,365.44, 349,644.30 and 138,644.10 is: 191,328.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,365.44 : 349,644.30 = 138,644.10 : x
  2. Step 2: Convert to fraction form
    253,365.44/349,644.30 = 138,644.10/x
  3. Step 3: Cross multiply
    253,365.44x = 349,644.30 × 138,644.10
  4. Step 4: Simplify right side
    253,365.44x = 48,476,117,944.83
  5. Step 5: Solve for x
    x = 48,476,117,944.83/253,365.44
  6. Step 6: Final answer
    x = 191,328.85

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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.