Home / 455,121.36-628,074.09-251,181.78

Finding the Fourth Proportional to 455,121.36, 628,074.09 and 251,181.78

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Solution

The fourth proportional to 455,121.36, 628,074.09 and 251,181.78 is: 346,634.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,121.36 : 628,074.09 = 251,181.78 : x
  2. Step 2: Convert to fraction form
    455,121.36/628,074.09 = 251,181.78/x
  3. Step 3: Cross multiply
    455,121.36x = 628,074.09 × 251,181.78
  4. Step 4: Simplify right side
    455,121.36x = 157,760,767,898.08
  5. Step 5: Solve for x
    x = 157,760,767,898.08/455,121.36
  6. Step 6: Final answer
    x = 346,634.51

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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.