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Finding the Fourth Proportional to 221,197.74, 331,795.57 and 69,405.93

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Solution

The fourth proportional to 221,197.74, 331,795.57 and 69,405.93 is: 104,108.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,197.74 : 331,795.57 = 69,405.93 : x
  2. Step 2: Convert to fraction form
    221,197.74/331,795.57 = 69,405.93/x
  3. Step 3: Cross multiply
    221,197.74x = 331,795.57 × 69,405.93
  4. Step 4: Simplify right side
    221,197.74x = 23,028,580,105.73
  5. Step 5: Solve for x
    x = 23,028,580,105.73/221,197.74
  6. Step 6: Final answer
    x = 104,108.57

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1.5x scale

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.