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Finding the Fourth Proportional to 453,418.80, 680,387.40 and 173,137.20

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Solution

The fourth proportional to 453,418.80, 680,387.40 and 173,137.20 is: 259,804.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,418.80 : 680,387.40 = 173,137.20 : x
  2. Step 2: Convert to fraction form
    453,418.80/680,387.40 = 173,137.20/x
  3. Step 3: Cross multiply
    453,418.80x = 680,387.40 × 173,137.20
  4. Step 4: Simplify right side
    453,418.80x = 117,800,369,351.28
  5. Step 5: Solve for x
    x = 117,800,369,351.28/453,418.80
  6. Step 6: Final answer
    x = 259,804.78

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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.