Home / 222,749.90-307,398.85-120,778.80

Finding the Fourth Proportional to 222,749.90, 307,398.85 and 120,778.80

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Solution

The fourth proportional to 222,749.90, 307,398.85 and 120,778.80 is: 166,676.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,749.90 : 307,398.85 = 120,778.80 : x
  2. Step 2: Convert to fraction form
    222,749.90/307,398.85 = 120,778.80/x
  3. Step 3: Cross multiply
    222,749.90x = 307,398.85 × 120,778.80
  4. Step 4: Simplify right side
    222,749.90x = 37,127,262,769.69
  5. Step 5: Solve for x
    x = 37,127,262,769.69/222,749.90
  6. Step 6: Final answer
    x = 166,676.90

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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.