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Finding the Fourth Proportional to 276,912.60, 382,139.16 and 149,588.16

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Solution

The fourth proportional to 276,912.60, 382,139.16 and 149,588.16 is: 206,431.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,912.60 : 382,139.16 = 149,588.16 : x
  2. Step 2: Convert to fraction form
    276,912.60/382,139.16 = 149,588.16/x
  3. Step 3: Cross multiply
    276,912.60x = 382,139.16 × 149,588.16
  4. Step 4: Simplify right side
    276,912.60x = 57,163,493,808.35
  5. Step 5: Solve for x
    x = 57,163,493,808.35/276,912.60
  6. Step 6: Final answer
    x = 206,431.54

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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.