Home / 221,316.96-305,406-120,695.52

Finding the Fourth Proportional to 221,316.96, 305,406 and 120,695.52

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Solution

The fourth proportional to 221,316.96, 305,406 and 120,695.52 is: 166,553.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,316.96 : 305,406 = 120,695.52 : x
  2. Step 2: Convert to fraction form
    221,316.96/305,406 = 120,695.52/x
  3. Step 3: Cross multiply
    221,316.96x = 305,406 × 120,695.52
  4. Step 4: Simplify right side
    221,316.96x = 36,861,135,981.12
  5. Step 5: Solve for x
    x = 36,861,135,981.12/221,316.96
  6. Step 6: Final answer
    x = 166,553.60

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Why These Related Problems?

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