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Finding the Fourth Proportional to 291,625.56, 437,438.52 and 81,269.04

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Solution

The fourth proportional to 291,625.56, 437,438.52 and 81,269.04 is: 121,903.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,625.56 : 437,438.52 = 81,269.04 : x
  2. Step 2: Convert to fraction form
    291,625.56/437,438.52 = 81,269.04/x
  3. Step 3: Cross multiply
    291,625.56x = 437,438.52 × 81,269.04
  4. Step 4: Simplify right side
    291,625.56x = 35,550,208,579.42
  5. Step 5: Solve for x
    x = 35,550,208,579.42/291,625.56
  6. Step 6: Final answer
    x = 121,903.61

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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.