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Finding the Fourth Proportional to 291,126, 436,689.20 and 80,764.14

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Solution

The fourth proportional to 291,126, 436,689.20 and 80,764.14 is: 121,146.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,126 : 436,689.20 = 80,764.14 : x
  2. Step 2: Convert to fraction form
    291,126/436,689.20 = 80,764.14/x
  3. Step 3: Cross multiply
    291,126x = 436,689.20 × 80,764.14
  4. Step 4: Simplify right side
    291,126x = 35,268,827,887.20
  5. Step 5: Solve for x
    x = 35,268,827,887.20/291,126
  6. Step 6: Final answer
    x = 121,146.27

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.