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Finding the Fourth Proportional to 481,985.78, 665,140.44 and 267,139.71

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Solution

The fourth proportional to 481,985.78, 665,140.44 and 267,139.71 is: 368,652.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,985.78 : 665,140.44 = 267,139.71 : x
  2. Step 2: Convert to fraction form
    481,985.78/665,140.44 = 267,139.71/x
  3. Step 3: Cross multiply
    481,985.78x = 665,140.44 × 267,139.71
  4. Step 4: Simplify right side
    481,985.78x = 177,685,425,252.65
  5. Step 5: Solve for x
    x = 177,685,425,252.65/481,985.78
  6. Step 6: Final answer
    x = 368,652.84

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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.