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Finding the Fourth Proportional to 223,491.63, 308,416.28 and 121,517.10

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Solution

The fourth proportional to 223,491.63, 308,416.28 and 121,517.10 is: 167,692.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,491.63 : 308,416.28 = 121,517.10 : x
  2. Step 2: Convert to fraction form
    223,491.63/308,416.28 = 121,517.10/x
  3. Step 3: Cross multiply
    223,491.63x = 308,416.28 × 121,517.10
  4. Step 4: Simplify right side
    223,491.63x = 37,477,851,922.39
  5. Step 5: Solve for x
    x = 37,477,851,922.39/223,491.63
  6. Step 6: Final answer
    x = 167,692.42

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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.