Home / 331,015.14-455,930.75-254,387.61

Finding the Fourth Proportional to 331,015.14, 455,930.75 and 254,387.61

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Solution

The fourth proportional to 331,015.14, 455,930.75 and 254,387.61 is: 350,386.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,015.14 : 455,930.75 = 254,387.61 : x
  2. Step 2: Convert to fraction form
    331,015.14/455,930.75 = 254,387.61/x
  3. Step 3: Cross multiply
    331,015.14x = 455,930.75 × 254,387.61
  4. Step 4: Simplify right side
    331,015.14x = 115,983,132,546.07
  5. Step 5: Solve for x
    x = 115,983,132,546.07/331,015.14
  6. Step 6: Final answer
    x = 350,386.19

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1.5x scale

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.