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Finding the Fourth Proportional to 223,604.12, 308,580.58 and 121,637

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Solution

The fourth proportional to 223,604.12, 308,580.58 and 121,637 is: 167,862.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,604.12 : 308,580.58 = 121,637 : x
  2. Step 2: Convert to fraction form
    223,604.12/308,580.58 = 121,637/x
  3. Step 3: Cross multiply
    223,604.12x = 308,580.58 × 121,637
  4. Step 4: Simplify right side
    223,604.12x = 37,534,816,009.46
  5. Step 5: Solve for x
    x = 37,534,816,009.46/223,604.12
  6. Step 6: Final answer
    x = 167,862.81

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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.