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Finding the Fourth Proportional to 223,154.64, 307,958.76 and 122,554.80

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Solution

The fourth proportional to 223,154.64, 307,958.76 and 122,554.80 is: 169,128.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,154.64 : 307,958.76 = 122,554.80 : x
  2. Step 2: Convert to fraction form
    223,154.64/307,958.76 = 122,554.80/x
  3. Step 3: Cross multiply
    223,154.64x = 307,958.76 × 122,554.80
  4. Step 4: Simplify right side
    223,154.64x = 37,741,824,240.05
  5. Step 5: Solve for x
    x = 37,741,824,240.05/223,154.64
  6. Step 6: Final answer
    x = 169,128.57

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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.