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Finding the Fourth Proportional to 481,980.90, 665,133.71 and 267,134.84

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Solution

The fourth proportional to 481,980.90, 665,133.71 and 267,134.84 is: 368,646.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,980.90 : 665,133.71 = 267,134.84 : x
  2. Step 2: Convert to fraction form
    481,980.90/665,133.71 = 267,134.84/x
  3. Step 3: Cross multiply
    481,980.90x = 665,133.71 × 267,134.84
  4. Step 4: Simplify right side
    481,980.90x = 177,680,382,538.11
  5. Step 5: Solve for x
    x = 177,680,382,538.11/481,980.90
  6. Step 6: Final answer
    x = 368,646.11

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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.