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Finding the Fourth Proportional to 283,580.87, 391,040.66 and 255,018.65

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Solution

The fourth proportional to 283,580.87, 391,040.66 and 255,018.65 is: 351,655.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,580.87 : 391,040.66 = 255,018.65 : x
  2. Step 2: Convert to fraction form
    283,580.87/391,040.66 = 255,018.65/x
  3. Step 3: Cross multiply
    283,580.87x = 391,040.66 × 255,018.65
  4. Step 4: Simplify right side
    283,580.87x = 99,722,659,890.65
  5. Step 5: Solve for x
    x = 99,722,659,890.65/283,580.87
  6. Step 6: Final answer
    x = 351,655.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.