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Finding the Fourth Proportional to 288,009.62, 397,389.68 and 167,080.85

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Solution

The fourth proportional to 288,009.62, 397,389.68 and 167,080.85 is: 230,534.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,009.62 : 397,389.68 = 167,080.85 : x
  2. Step 2: Convert to fraction form
    288,009.62/397,389.68 = 167,080.85/x
  3. Step 3: Cross multiply
    288,009.62x = 397,389.68 × 167,080.85
  4. Step 4: Simplify right side
    288,009.62x = 66,396,203,941.04
  5. Step 5: Solve for x
    x = 66,396,203,941.04/288,009.62
  6. Step 6: Final answer
    x = 230,534.67

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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.