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Finding the Fourth Proportional to 223,493.60, 308,421.09 and 122,891.60

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Solution

The fourth proportional to 223,493.60, 308,421.09 and 122,891.60 is: 169,590.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,493.60 : 308,421.09 = 122,891.60 : x
  2. Step 2: Convert to fraction form
    223,493.60/308,421.09 = 122,891.60/x
  3. Step 3: Cross multiply
    223,493.60x = 308,421.09 × 122,891.60
  4. Step 4: Simplify right side
    223,493.60x = 37,902,361,223.84
  5. Step 5: Solve for x
    x = 37,902,361,223.84/223,493.60
  6. Step 6: Final answer
    x = 169,590.37

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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.