Home / 213,494.22-319,994.78-80,289.45

Finding the Fourth Proportional to 213,494.22, 319,994.78 and 80,289.45

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Solution

The fourth proportional to 213,494.22, 319,994.78 and 80,289.45 is: 120,341.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,494.22 : 319,994.78 = 80,289.45 : x
  2. Step 2: Convert to fraction form
    213,494.22/319,994.78 = 80,289.45/x
  3. Step 3: Cross multiply
    213,494.22x = 319,994.78 × 80,289.45
  4. Step 4: Simplify right side
    213,494.22x = 25,692,204,487.62
  5. Step 5: Solve for x
    x = 25,692,204,487.62/213,494.22
  6. Step 6: Final answer
    x = 120,341.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.