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Finding the Fourth Proportional to 291,753.59, 437,704.19 and 81,391.37

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Solution

The fourth proportional to 291,753.59, 437,704.19 and 81,391.37 is: 122,107.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,753.59 : 437,704.19 = 81,391.37 : x
  2. Step 2: Convert to fraction form
    291,753.59/437,704.19 = 81,391.37/x
  3. Step 3: Cross multiply
    291,753.59x = 437,704.19 × 81,391.37
  4. Step 4: Simplify right side
    291,753.59x = 35,625,343,271.88
  5. Step 5: Solve for x
    x = 35,625,343,271.88/291,753.59
  6. Step 6: Final answer
    x = 122,107.64

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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.