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Finding the Fourth Proportional to 291,241.80, 436,862.86 and 80,879.72

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Solution

The fourth proportional to 291,241.80, 436,862.86 and 80,879.72 is: 121,319.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,241.80 : 436,862.86 = 80,879.72 : x
  2. Step 2: Convert to fraction form
    291,241.80/436,862.86 = 80,879.72/x
  3. Step 3: Cross multiply
    291,241.80x = 436,862.86 × 80,879.72
  4. Step 4: Simplify right side
    291,241.80x = 35,333,345,795.20
  5. Step 5: Solve for x
    x = 35,333,345,795.20/291,241.80
  6. Step 6: Final answer
    x = 121,319.62

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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.