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Finding the Fourth Proportional to 291,150.39, 436,725.78 and 80,788.53

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Solution

The fourth proportional to 291,150.39, 436,725.78 and 80,788.53 is: 121,182.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,150.39 : 436,725.78 = 80,788.53 : x
  2. Step 2: Convert to fraction form
    291,150.39/436,725.78 = 80,788.53/x
  3. Step 3: Cross multiply
    291,150.39x = 436,725.78 × 80,788.53
  4. Step 4: Simplify right side
    291,150.39x = 35,282,433,779.30
  5. Step 5: Solve for x
    x = 35,282,433,779.30/291,150.39
  6. Step 6: Final answer
    x = 121,182.85

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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.