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Finding the Fourth Proportional to 290,773.60, 436,030.80 and 132,920.80

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Solution

The fourth proportional to 290,773.60, 436,030.80 and 132,920.80 is: 199,321.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,773.60 : 436,030.80 = 132,920.80 : x
  2. Step 2: Convert to fraction form
    290,773.60/436,030.80 = 132,920.80/x
  3. Step 3: Cross multiply
    290,773.60x = 436,030.80 × 132,920.80
  4. Step 4: Simplify right side
    290,773.60x = 57,957,562,760.64
  5. Step 5: Solve for x
    x = 57,957,562,760.64/290,773.60
  6. Step 6: Final answer
    x = 199,321.96

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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.