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Finding the Fourth Proportional to 641,139.48, 961,796.70 and 267,075

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Solution

The fourth proportional to 641,139.48, 961,796.70 and 267,075 is: 400,648.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,139.48 : 961,796.70 = 267,075 : x
  2. Step 2: Convert to fraction form
    641,139.48/961,796.70 = 267,075/x
  3. Step 3: Cross multiply
    641,139.48x = 961,796.70 × 267,075
  4. Step 4: Simplify right side
    641,139.48x = 256,871,853,652.50
  5. Step 5: Solve for x
    x = 256,871,853,652.50/641,139.48
  6. Step 6: Final answer
    x = 400,648.94

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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.