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Finding the Fourth Proportional to 276,906.80, 415,338.60 and 108,394.40

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Solution

The fourth proportional to 276,906.80, 415,338.60 and 108,394.40 is: 162,583.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,906.80 : 415,338.60 = 108,394.40 : x
  2. Step 2: Convert to fraction form
    276,906.80/415,338.60 = 108,394.40/x
  3. Step 3: Cross multiply
    276,906.80x = 415,338.60 × 108,394.40
  4. Step 4: Simplify right side
    276,906.80x = 45,020,378,343.84
  5. Step 5: Solve for x
    x = 45,020,378,343.84/276,906.80
  6. Step 6: Final answer
    x = 162,583.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.