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Finding the Fourth Proportional to 290,793.96, 436,157.19 and 80,448.30

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Solution

The fourth proportional to 290,793.96, 436,157.19 and 80,448.30 is: 120,663.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,793.96 : 436,157.19 = 80,448.30 : x
  2. Step 2: Convert to fraction form
    290,793.96/436,157.19 = 80,448.30/x
  3. Step 3: Cross multiply
    290,793.96x = 436,157.19 × 80,448.30
  4. Step 4: Simplify right side
    290,793.96x = 35,088,104,468.28
  5. Step 5: Solve for x
    x = 35,088,104,468.28/290,793.96
  6. Step 6: Final answer
    x = 120,663.11

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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.