Home / 455,257.22-628,289.75-251,347.42

Finding the Fourth Proportional to 455,257.22, 628,289.75 and 251,347.42

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Solution

The fourth proportional to 455,257.22, 628,289.75 and 251,347.42 is: 346,878.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,257.22 : 628,289.75 = 251,347.42 : x
  2. Step 2: Convert to fraction form
    455,257.22/628,289.75 = 251,347.42/x
  3. Step 3: Cross multiply
    455,257.22x = 628,289.75 × 251,347.42
  4. Step 4: Simplify right side
    455,257.22x = 157,919,006,732.59
  5. Step 5: Solve for x
    x = 157,919,006,732.59/455,257.22
  6. Step 6: Final answer
    x = 346,878.64

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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.