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Finding the Fourth Proportional to 223,648.74, 308,636 and 121,674.17

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Solution

The fourth proportional to 223,648.74, 308,636 and 121,674.17 is: 167,910.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,648.74 : 308,636 = 121,674.17 : x
  2. Step 2: Convert to fraction form
    223,648.74/308,636 = 121,674.17/x
  3. Step 3: Cross multiply
    223,648.74x = 308,636 × 121,674.17
  4. Step 4: Simplify right side
    223,648.74x = 37,553,029,132.12
  5. Step 5: Solve for x
    x = 37,553,029,132.12/223,648.74
  6. Step 6: Final answer
    x = 167,910.76

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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.