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Finding the Fourth Proportional to 543,676.98, 815,349 and 259,217.52

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Solution

The fourth proportional to 543,676.98, 815,349 and 259,217.52 is: 388,746.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,676.98 : 815,349 = 259,217.52 : x
  2. Step 2: Convert to fraction form
    543,676.98/815,349 = 259,217.52/x
  3. Step 3: Cross multiply
    543,676.98x = 815,349 × 259,217.52
  4. Step 4: Simplify right side
    543,676.98x = 211,352,745,714.48
  5. Step 5: Solve for x
    x = 211,352,745,714.48/543,676.98
  6. Step 6: Final answer
    x = 388,746.91

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1.5x scale

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.