Home / 221,868.75-306,200.42-131,253.89

Finding the Fourth Proportional to 221,868.75, 306,200.42 and 131,253.89

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Solution

The fourth proportional to 221,868.75, 306,200.42 and 131,253.89 is: 181,143.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,868.75 : 306,200.42 = 131,253.89 : x
  2. Step 2: Convert to fraction form
    221,868.75/306,200.42 = 131,253.89/x
  3. Step 3: Cross multiply
    221,868.75x = 306,200.42 × 131,253.89
  4. Step 4: Simplify right side
    221,868.75x = 40,189,994,057.36
  5. Step 5: Solve for x
    x = 40,189,994,057.36/221,868.75
  6. Step 6: Final answer
    x = 181,143.10

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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.