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Finding the Fourth Proportional to 236,185.72, 354,187 and 78,371.80

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Solution

The fourth proportional to 236,185.72, 354,187 and 78,371.80 is: 117,527.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,185.72 : 354,187 = 78,371.80 : x
  2. Step 2: Convert to fraction form
    236,185.72/354,187 = 78,371.80/x
  3. Step 3: Cross multiply
    236,185.72x = 354,187 × 78,371.80
  4. Step 4: Simplify right side
    236,185.72x = 27,758,272,726.60
  5. Step 5: Solve for x
    x = 27,758,272,726.60/236,185.72
  6. Step 6: Final answer
    x = 117,527.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.