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Finding the Fourth Proportional to 221,908.88, 306,200 and 126,403.44

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Solution

The fourth proportional to 221,908.88, 306,200 and 126,403.44 is: 174,417.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,908.88 : 306,200 = 126,403.44 : x
  2. Step 2: Convert to fraction form
    221,908.88/306,200 = 126,403.44/x
  3. Step 3: Cross multiply
    221,908.88x = 306,200 × 126,403.44
  4. Step 4: Simplify right side
    221,908.88x = 38,704,733,328
  5. Step 5: Solve for x
    x = 38,704,733,328/221,908.88
  6. Step 6: Final answer
    x = 174,417.24

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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.