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Finding the Fourth Proportional to 290,774.60, 436,233.90 and 132,969.80

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Solution

The fourth proportional to 290,774.60, 436,233.90 and 132,969.80 is: 199,487.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,774.60 : 436,233.90 = 132,969.80 : x
  2. Step 2: Convert to fraction form
    290,774.60/436,233.90 = 132,969.80/x
  3. Step 3: Cross multiply
    290,774.60x = 436,233.90 × 132,969.80
  4. Step 4: Simplify right side
    290,774.60x = 58,005,934,436.22
  5. Step 5: Solve for x
    x = 58,005,934,436.22/290,774.60
  6. Step 6: Final answer
    x = 199,487.63

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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.