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Finding the Fourth Proportional to 221,153.09, 305,191.26 and 120,551.09

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Solution

The fourth proportional to 221,153.09, 305,191.26 and 120,551.09 is: 166,360.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,153.09 : 305,191.26 = 120,551.09 : x
  2. Step 2: Convert to fraction form
    221,153.09/305,191.26 = 120,551.09/x
  3. Step 3: Cross multiply
    221,153.09x = 305,191.26 × 120,551.09
  4. Step 4: Simplify right side
    221,153.09x = 36,791,137,525.52
  5. Step 5: Solve for x
    x = 36,791,137,525.52/221,153.09
  6. Step 6: Final answer
    x = 166,360.50

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.