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Finding the Fourth Proportional to 290,553.86, 400,893.80 and 169,625.90

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Solution

The fourth proportional to 290,553.86, 400,893.80 and 169,625.90 is: 234,042.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,553.86 : 400,893.80 = 169,625.90 : x
  2. Step 2: Convert to fraction form
    290,553.86/400,893.80 = 169,625.90/x
  3. Step 3: Cross multiply
    290,553.86x = 400,893.80 × 169,625.90
  4. Step 4: Simplify right side
    290,553.86x = 68,001,971,629.42
  5. Step 5: Solve for x
    x = 68,001,971,629.42/290,553.86
  6. Step 6: Final answer
    x = 234,042.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.