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Finding the Fourth Proportional to 275,813.80, 413,720.70 and 262,983.40

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Solution

The fourth proportional to 275,813.80, 413,720.70 and 262,983.40 is: 394,475.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,813.80 : 413,720.70 = 262,983.40 : x
  2. Step 2: Convert to fraction form
    275,813.80/413,720.70 = 262,983.40/x
  3. Step 3: Cross multiply
    275,813.80x = 413,720.70 × 262,983.40
  4. Step 4: Simplify right side
    275,813.80x = 108,801,676,336.38
  5. Step 5: Solve for x
    x = 108,801,676,336.38/275,813.80
  6. Step 6: Final answer
    x = 394,475.10

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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.