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Finding the Fourth Proportional to 455,437.10, 682,286.32 and 255,151.64

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Solution

The fourth proportional to 455,437.10, 682,286.32 and 255,151.64 is: 382,240.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,437.10 : 682,286.32 = 255,151.64 : x
  2. Step 2: Convert to fraction form
    455,437.10/682,286.32 = 255,151.64/x
  3. Step 3: Cross multiply
    455,437.10x = 682,286.32 × 255,151.64
  4. Step 4: Simplify right side
    455,437.10x = 174,086,475,522.22
  5. Step 5: Solve for x
    x = 174,086,475,522.22/455,437.10
  6. Step 6: Final answer
    x = 382,240.43

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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.