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Finding the Fourth Proportional to 223,648.21, 308,635.26 and 121,673.65

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Solution

The fourth proportional to 223,648.21, 308,635.26 and 121,673.65 is: 167,910.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,648.21 : 308,635.26 = 121,673.65 : x
  2. Step 2: Convert to fraction form
    223,648.21/308,635.26 = 121,673.65/x
  3. Step 3: Cross multiply
    223,648.21x = 308,635.26 × 121,673.65
  4. Step 4: Simplify right side
    223,648.21x = 37,552,777,831.31
  5. Step 5: Solve for x
    x = 37,552,777,831.31/223,648.21
  6. Step 6: Final answer
    x = 167,910.03

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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.