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Finding the Fourth Proportional to 291,325.25, 436,988.01 and 80,965.01

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Solution

The fourth proportional to 291,325.25, 436,988.01 and 80,965.01 is: 121,447.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,325.25 : 436,988.01 = 80,965.01 : x
  2. Step 2: Convert to fraction form
    291,325.25/436,988.01 = 80,965.01/x
  3. Step 3: Cross multiply
    291,325.25x = 436,988.01 × 80,965.01
  4. Step 4: Simplify right side
    291,325.25x = 35,380,738,599.53
  5. Step 5: Solve for x
    x = 35,380,738,599.53/291,325.25
  6. Step 6: Final answer
    x = 121,447.55

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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.