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Finding the Fourth Proportional to 291,796.04, 437,655.12 and 81,455.24

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Solution

The fourth proportional to 291,796.04, 437,655.12 and 81,455.24 is: 122,171.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,796.04 : 437,655.12 = 81,455.24 : x
  2. Step 2: Convert to fraction form
    291,796.04/437,655.12 = 81,455.24/x
  3. Step 3: Cross multiply
    291,796.04x = 437,655.12 × 81,455.24
  4. Step 4: Simplify right side
    291,796.04x = 35,649,302,836.83
  5. Step 5: Solve for x
    x = 35,649,302,836.83/291,796.04
  6. Step 6: Final answer
    x = 122,171.99

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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.