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Finding the Fourth Proportional to 216,504.93, 298,777.92 and 121,009.59

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Solution

The fourth proportional to 216,504.93, 298,777.92 and 121,009.59 is: 166,993.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,504.93 : 298,777.92 = 121,009.59 : x
  2. Step 2: Convert to fraction form
    216,504.93/298,777.92 = 121,009.59/x
  3. Step 3: Cross multiply
    216,504.93x = 298,777.92 × 121,009.59
  4. Step 4: Simplify right side
    216,504.93x = 36,154,993,600.25
  5. Step 5: Solve for x
    x = 36,154,993,600.25/216,504.93
  6. Step 6: Final answer
    x = 166,993.86

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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.