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Finding the Fourth Proportional to 422,857.77, 634,274.37 and 156,612.39

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Solution

The fourth proportional to 422,857.77, 634,274.37 and 156,612.39 is: 234,914.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,857.77 : 634,274.37 = 156,612.39 : x
  2. Step 2: Convert to fraction form
    422,857.77/634,274.37 = 156,612.39/x
  3. Step 3: Cross multiply
    422,857.77x = 634,274.37 × 156,612.39
  4. Step 4: Simplify right side
    422,857.77x = 99,335,225,001.44
  5. Step 5: Solve for x
    x = 99,335,225,001.44/422,857.77
  6. Step 6: Final answer
    x = 234,914.04

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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.