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Finding the Fourth Proportional to 543,271.82, 815,074.58 and 259,324.70

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Solution

The fourth proportional to 543,271.82, 815,074.58 and 259,324.70 is: 389,066.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,271.82 : 815,074.58 = 259,324.70 : x
  2. Step 2: Convert to fraction form
    543,271.82/815,074.58 = 259,324.70/x
  3. Step 3: Cross multiply
    543,271.82x = 815,074.58 × 259,324.70
  4. Step 4: Simplify right side
    543,271.82x = 211,368,967,509.07
  5. Step 5: Solve for x
    x = 211,368,967,509.07/543,271.82
  6. Step 6: Final answer
    x = 389,066.69

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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.