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Finding the Fourth Proportional to 481,990.40, 665,146.80 and 267,144.32

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Solution

The fourth proportional to 481,990.40, 665,146.80 and 267,144.32 is: 368,659.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,990.40 : 665,146.80 = 267,144.32 : x
  2. Step 2: Convert to fraction form
    481,990.40/665,146.80 = 267,144.32/x
  3. Step 3: Cross multiply
    481,990.40x = 665,146.80 × 267,144.32
  4. Step 4: Simplify right side
    481,990.40x = 177,690,189,586.18
  5. Step 5: Solve for x
    x = 177,690,189,586.18/481,990.40
  6. Step 6: Final answer
    x = 368,659.19

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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.