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Finding the Fourth Proportional to 236,690.37, 354,904.20 and 78,832.71

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Solution

The fourth proportional to 236,690.37, 354,904.20 and 78,832.71 is: 118,205.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,690.37 : 354,904.20 = 78,832.71 : x
  2. Step 2: Convert to fraction form
    236,690.37/354,904.20 = 78,832.71/x
  3. Step 3: Cross multiply
    236,690.37x = 354,904.20 × 78,832.71
  4. Step 4: Simplify right side
    236,690.37x = 27,978,059,876.38
  5. Step 5: Solve for x
    x = 27,978,059,876.38/236,690.37
  6. Step 6: Final answer
    x = 118,205.32

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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.