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Finding the Fourth Proportional to 223,383.38, 308,271.48 and 121,408.79

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Solution

The fourth proportional to 223,383.38, 308,271.48 and 121,408.79 is: 167,545.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,383.38 : 308,271.48 = 121,408.79 : x
  2. Step 2: Convert to fraction form
    223,383.38/308,271.48 = 121,408.79/x
  3. Step 3: Cross multiply
    223,383.38x = 308,271.48 × 121,408.79
  4. Step 4: Simplify right side
    223,383.38x = 37,426,867,378.31
  5. Step 5: Solve for x
    x = 37,426,867,378.31/223,383.38
  6. Step 6: Final answer
    x = 167,545.44

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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.