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Finding the Fourth Proportional to 288,189.76, 397,786.34 and 167,385.34

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Solution

The fourth proportional to 288,189.76, 397,786.34 and 167,385.34 is: 231,040.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,189.76 : 397,786.34 = 167,385.34 : x
  2. Step 2: Convert to fraction form
    288,189.76/397,786.34 = 167,385.34/x
  3. Step 3: Cross multiply
    288,189.76x = 397,786.34 × 167,385.34
  4. Step 4: Simplify right side
    288,189.76x = 66,583,601,768.26
  5. Step 5: Solve for x
    x = 66,583,601,768.26/288,189.76
  6. Step 6: Final answer
    x = 231,040.83

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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.