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Finding the Fourth Proportional to 236,441.80, 354,695.10 and 78,653.80

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Solution

The fourth proportional to 236,441.80, 354,695.10 and 78,653.80 is: 117,991.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,441.80 : 354,695.10 = 78,653.80 : x
  2. Step 2: Convert to fraction form
    236,441.80/354,695.10 = 78,653.80/x
  3. Step 3: Cross multiply
    236,441.80x = 354,695.10 × 78,653.80
  4. Step 4: Simplify right side
    236,441.80x = 27,898,117,456.38
  5. Step 5: Solve for x
    x = 27,898,117,456.38/236,441.80
  6. Step 6: Final answer
    x = 117,991.48

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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.