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Finding the Fourth Proportional to 223,463.28, 308,379.33 and 122,861.28

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Solution

The fourth proportional to 223,463.28, 308,379.33 and 122,861.28 is: 169,548.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,463.28 : 308,379.33 = 122,861.28 : x
  2. Step 2: Convert to fraction form
    223,463.28/308,379.33 = 122,861.28/x
  3. Step 3: Cross multiply
    223,463.28x = 308,379.33 × 122,861.28
  4. Step 4: Simplify right side
    223,463.28x = 37,887,879,209.34
  5. Step 5: Solve for x
    x = 37,887,879,209.34/223,463.28
  6. Step 6: Final answer
    x = 169,548.57

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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.