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Finding the Fourth Proportional to 290,161.28, 400,424.92 and 162,866.90

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Solution

The fourth proportional to 290,161.28, 400,424.92 and 162,866.90 is: 224,757.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,161.28 : 400,424.92 = 162,866.90 : x
  2. Step 2: Convert to fraction form
    290,161.28/400,424.92 = 162,866.90/x
  3. Step 3: Cross multiply
    290,161.28x = 400,424.92 × 162,866.90
  4. Step 4: Simplify right side
    290,161.28x = 65,215,965,403.15
  5. Step 5: Solve for x
    x = 65,215,965,403.15/290,161.28
  6. Step 6: Final answer
    x = 224,757.64

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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.