Home / 305,905.39-422,141.86-169,939.67

Finding the Fourth Proportional to 305,905.39, 422,141.86 and 169,939.67

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Solution

The fourth proportional to 305,905.39, 422,141.86 and 169,939.67 is: 234,512.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,905.39 : 422,141.86 = 169,939.67 : x
  2. Step 2: Convert to fraction form
    305,905.39/422,141.86 = 169,939.67/x
  3. Step 3: Cross multiply
    305,905.39x = 422,141.86 × 169,939.67
  4. Step 4: Simplify right side
    305,905.39x = 71,738,648,857.85
  5. Step 5: Solve for x
    x = 71,738,648,857.85/305,905.39
  6. Step 6: Final answer
    x = 234,512.53

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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.