Home / 221,416.42-305,555.85-120,816.58

Finding the Fourth Proportional to 221,416.42, 305,555.85 and 120,816.58

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Solution

The fourth proportional to 221,416.42, 305,555.85 and 120,816.58 is: 166,727.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,416.42 : 305,555.85 = 120,816.58 : x
  2. Step 2: Convert to fraction form
    221,416.42/305,555.85 = 120,816.58/x
  3. Step 3: Cross multiply
    221,416.42x = 305,555.85 × 120,816.58
  4. Step 4: Simplify right side
    221,416.42x = 36,916,212,795.99
  5. Step 5: Solve for x
    x = 36,916,212,795.99/221,416.42
  6. Step 6: Final answer
    x = 166,727.53

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1.5x scale

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.