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Finding the Fourth Proportional to 223,648.40, 308,635.52 and 121,673.84

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Solution

The fourth proportional to 223,648.40, 308,635.52 and 121,673.84 is: 167,910.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,648.40 : 308,635.52 = 121,673.84 : x
  2. Step 2: Convert to fraction form
    223,648.40/308,635.52 = 121,673.84/x
  3. Step 3: Cross multiply
    223,648.40x = 308,635.52 × 121,673.84
  4. Step 4: Simplify right side
    223,648.40x = 37,552,866,727.25
  5. Step 5: Solve for x
    x = 37,552,866,727.25/223,648.40
  6. Step 6: Final answer
    x = 167,910.29

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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.