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Finding the Fourth Proportional to 288,408.27, 398,001.15 and 167,620.26

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Solution

The fourth proportional to 288,408.27, 398,001.15 and 167,620.26 is: 231,314.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,408.27 : 398,001.15 = 167,620.26 : x
  2. Step 2: Convert to fraction form
    288,408.27/398,001.15 = 167,620.26/x
  3. Step 3: Cross multiply
    288,408.27x = 398,001.15 × 167,620.26
  4. Step 4: Simplify right side
    288,408.27x = 66,713,056,243.30
  5. Step 5: Solve for x
    x = 66,713,056,243.30/288,408.27
  6. Step 6: Final answer
    x = 231,314.64

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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.