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Finding the Fourth Proportional to 216,494.79, 298,757.64 and 121,010.37

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Solution

The fourth proportional to 216,494.79, 298,757.64 and 121,010.37 is: 166,991.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,494.79 : 298,757.64 = 121,010.37 : x
  2. Step 2: Convert to fraction form
    216,494.79/298,757.64 = 121,010.37/x
  3. Step 3: Cross multiply
    216,494.79x = 298,757.64 × 121,010.37
  4. Step 4: Simplify right side
    216,494.79x = 36,152,772,556.73
  5. Step 5: Solve for x
    x = 36,152,772,556.73/216,494.79
  6. Step 6: Final answer
    x = 166,991.42

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1.5x scale

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.