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Finding the Fourth Proportional to 340,741.80, 511,112.70 and 261,025.65

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Solution

The fourth proportional to 340,741.80, 511,112.70 and 261,025.65 is: 391,538.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,741.80 : 511,112.70 = 261,025.65 : x
  2. Step 2: Convert to fraction form
    340,741.80/511,112.70 = 261,025.65/x
  3. Step 3: Cross multiply
    340,741.80x = 511,112.70 × 261,025.65
  4. Step 4: Simplify right side
    340,741.80x = 133,413,524,740.76
  5. Step 5: Solve for x
    x = 133,413,524,740.76/340,741.80
  6. Step 6: Final answer
    x = 391,538.48

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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.