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Finding the Fourth Proportional to 290,288.86, 400,576.51 and 162,939.85

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Solution

The fourth proportional to 290,288.86, 400,576.51 and 162,939.85 is: 224,844.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,288.86 : 400,576.51 = 162,939.85 : x
  2. Step 2: Convert to fraction form
    290,288.86/400,576.51 = 162,939.85/x
  3. Step 3: Cross multiply
    290,288.86x = 400,576.51 × 162,939.85
  4. Step 4: Simplify right side
    290,288.86x = 65,269,876,452.92
  5. Step 5: Solve for x
    x = 65,269,876,452.92/290,288.86
  6. Step 6: Final answer
    x = 224,844.58

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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.