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Finding the Fourth Proportional to 273,265.20, 409,679.10 and 115,363.80

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Solution

The fourth proportional to 273,265.20, 409,679.10 and 115,363.80 is: 172,953.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,265.20 : 409,679.10 = 115,363.80 : x
  2. Step 2: Convert to fraction form
    273,265.20/409,679.10 = 115,363.80/x
  3. Step 3: Cross multiply
    273,265.20x = 409,679.10 × 115,363.80
  4. Step 4: Simplify right side
    273,265.20x = 47,262,137,756.58
  5. Step 5: Solve for x
    x = 47,262,137,756.58/273,265.20
  6. Step 6: Final answer
    x = 172,953.37

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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.