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Finding the Fourth Proportional to 275,143.80, 411,563.70 and 247,265.40

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Solution

The fourth proportional to 275,143.80, 411,563.70 and 247,265.40 is: 369,862.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,143.80 : 411,563.70 = 247,265.40 : x
  2. Step 2: Convert to fraction form
    275,143.80/411,563.70 = 247,265.40/x
  3. Step 3: Cross multiply
    275,143.80x = 411,563.70 × 247,265.40
  4. Step 4: Simplify right side
    275,143.80x = 101,765,462,905.98
  5. Step 5: Solve for x
    x = 101,765,462,905.98/275,143.80
  6. Step 6: Final answer
    x = 369,862.82

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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.