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Finding the Fourth Proportional to 422,741.28, 634,102.53 and 102,894.51

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Solution

The fourth proportional to 422,741.28, 634,102.53 and 102,894.51 is: 154,339.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,741.28 : 634,102.53 = 102,894.51 : x
  2. Step 2: Convert to fraction form
    422,741.28/634,102.53 = 102,894.51/x
  3. Step 3: Cross multiply
    422,741.28x = 634,102.53 × 102,894.51
  4. Step 4: Simplify right side
    422,741.28x = 65,245,669,114.11
  5. Step 5: Solve for x
    x = 65,245,669,114.11/422,741.28
  6. Step 6: Final answer
    x = 154,339.48

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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.