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Finding the Fourth Proportional to 291,269.58, 436,928.01 and 80,907.49

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Solution

The fourth proportional to 291,269.58, 436,928.01 and 80,907.49 is: 121,367.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,269.58 : 436,928.01 = 80,907.49 : x
  2. Step 2: Convert to fraction form
    291,269.58/436,928.01 = 80,907.49/x
  3. Step 3: Cross multiply
    291,269.58x = 436,928.01 × 80,907.49
  4. Step 4: Simplify right side
    291,269.58x = 35,350,748,599.79
  5. Step 5: Solve for x
    x = 35,350,748,599.79/291,269.58
  6. Step 6: Final answer
    x = 121,367.80

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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.