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Finding the Fourth Proportional to 215,990.73, 298,066.77 and 120,491.73

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Solution

The fourth proportional to 215,990.73, 298,066.77 and 120,491.73 is: 166,278.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,990.73 : 298,066.77 = 120,491.73 : x
  2. Step 2: Convert to fraction form
    215,990.73/298,066.77 = 120,491.73/x
  3. Step 3: Cross multiply
    215,990.73x = 298,066.77 × 120,491.73
  4. Step 4: Simplify right side
    215,990.73x = 35,914,580,772.81
  5. Step 5: Solve for x
    x = 35,914,580,772.81/215,990.73
  6. Step 6: Final answer
    x = 166,278.34

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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.