Home / 331,621.26-457,173.94-280,428.60

Finding the Fourth Proportional to 331,621.26, 457,173.94 and 280,428.60

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Solution

The fourth proportional to 331,621.26, 457,173.94 and 280,428.60 is: 386,599.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,621.26 : 457,173.94 = 280,428.60 : x
  2. Step 2: Convert to fraction form
    331,621.26/457,173.94 = 280,428.60/x
  3. Step 3: Cross multiply
    331,621.26x = 457,173.94 × 280,428.60
  4. Step 4: Simplify right side
    331,621.26x = 128,204,646,918.22
  5. Step 5: Solve for x
    x = 128,204,646,918.22/331,621.26
  6. Step 6: Final answer
    x = 386,599.61

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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.