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Finding the Fourth Proportional to 291,682.17, 437,525.24 and 81,321.93

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Solution

The fourth proportional to 291,682.17, 437,525.24 and 81,321.93 is: 121,983.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,682.17 : 437,525.24 = 81,321.93 : x
  2. Step 2: Convert to fraction form
    291,682.17/437,525.24 = 81,321.93/x
  3. Step 3: Cross multiply
    291,682.17x = 437,525.24 × 81,321.93
  4. Step 4: Simplify right side
    291,682.17x = 35,580,396,533.90
  5. Step 5: Solve for x
    x = 35,580,396,533.90/291,682.17
  6. Step 6: Final answer
    x = 121,983.45

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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.