Home / 481,345.54-664,431.33-280,141.54

Finding the Fourth Proportional to 481,345.54, 664,431.33 and 280,141.54

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Solution

The fourth proportional to 481,345.54, 664,431.33 and 280,141.54 is: 386,696.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,345.54 : 664,431.33 = 280,141.54 : x
  2. Step 2: Convert to fraction form
    481,345.54/664,431.33 = 280,141.54/x
  3. Step 3: Cross multiply
    481,345.54x = 664,431.33 × 280,141.54
  4. Step 4: Simplify right side
    481,345.54x = 186,134,816,010.45
  5. Step 5: Solve for x
    x = 186,134,816,010.45/481,345.54
  6. Step 6: Final answer
    x = 386,696.87

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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.