Home / 330,021.44-455,430-179,118.48

Finding the Fourth Proportional to 330,021.44, 455,430 and 179,118.48

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Solution

The fourth proportional to 330,021.44, 455,430 and 179,118.48 is: 247,183.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,021.44 : 455,430 = 179,118.48 : x
  2. Step 2: Convert to fraction form
    330,021.44/455,430 = 179,118.48/x
  3. Step 3: Cross multiply
    330,021.44x = 455,430 × 179,118.48
  4. Step 4: Simplify right side
    330,021.44x = 81,575,929,346.40
  5. Step 5: Solve for x
    x = 81,575,929,346.40/330,021.44
  6. Step 6: Final answer
    x = 247,183.73

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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.