Home / 221,845.72-306,178.78-126,361.28

Finding the Fourth Proportional to 221,845.72, 306,178.78 and 126,361.28

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Solution

The fourth proportional to 221,845.72, 306,178.78 and 126,361.28 is: 174,396.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,845.72 : 306,178.78 = 126,361.28 : x
  2. Step 2: Convert to fraction form
    221,845.72/306,178.78 = 126,361.28/x
  3. Step 3: Cross multiply
    221,845.72x = 306,178.78 × 126,361.28
  4. Step 4: Simplify right side
    221,845.72x = 38,689,142,549.64
  5. Step 5: Solve for x
    x = 38,689,142,549.64/221,845.72
  6. Step 6: Final answer
    x = 174,396.61

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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.