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Finding the Fourth Proportional to 223,418.85, 308,317.41 and 121,444.30

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Solution

The fourth proportional to 223,418.85, 308,317.41 and 121,444.30 is: 167,592.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,418.85 : 308,317.41 = 121,444.30 : x
  2. Step 2: Convert to fraction form
    223,418.85/308,317.41 = 121,444.30/x
  3. Step 3: Cross multiply
    223,418.85x = 308,317.41 × 121,444.30
  4. Step 4: Simplify right side
    223,418.85x = 37,443,392,035.26
  5. Step 5: Solve for x
    x = 37,443,392,035.26/223,418.85
  6. Step 6: Final answer
    x = 167,592.81

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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.