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Finding the Fourth Proportional to 221,027.60, 331,541.40 and 80,840.90

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Solution

The fourth proportional to 221,027.60, 331,541.40 and 80,840.90 is: 121,261.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,027.60 : 331,541.40 = 80,840.90 : x
  2. Step 2: Convert to fraction form
    221,027.60/331,541.40 = 80,840.90/x
  3. Step 3: Cross multiply
    221,027.60x = 331,541.40 × 80,840.90
  4. Step 4: Simplify right side
    221,027.60x = 26,802,105,163.26
  5. Step 5: Solve for x
    x = 26,802,105,163.26/221,027.60
  6. Step 6: Final answer
    x = 121,261.35

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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.