Home / 455,227.20-628,213.56-251,278.18

Finding the Fourth Proportional to 455,227.20, 628,213.56 and 251,278.18

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Solution

The fourth proportional to 455,227.20, 628,213.56 and 251,278.18 is: 346,763.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,227.20 : 628,213.56 = 251,278.18 : x
  2. Step 2: Convert to fraction form
    455,227.20/628,213.56 = 251,278.18/x
  3. Step 3: Cross multiply
    455,227.20x = 628,213.56 × 251,278.18
  4. Step 4: Simplify right side
    455,227.20x = 157,856,358,437.59
  5. Step 5: Solve for x
    x = 157,856,358,437.59/455,227.20
  6. Step 6: Final answer
    x = 346,763.90

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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.