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Finding the Fourth Proportional to 290,213.36, 400,379.92 and 167,624.72

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Solution

The fourth proportional to 290,213.36, 400,379.92 and 167,624.72 is: 231,255.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,213.36 : 400,379.92 = 167,624.72 : x
  2. Step 2: Convert to fraction form
    290,213.36/400,379.92 = 167,624.72/x
  3. Step 3: Cross multiply
    290,213.36x = 400,379.92 × 167,624.72
  4. Step 4: Simplify right side
    290,213.36x = 67,113,571,983.62
  5. Step 5: Solve for x
    x = 67,113,571,983.62/290,213.36
  6. Step 6: Final answer
    x = 231,255.97

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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.