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Finding the Fourth Proportional to 290,223.70, 400,486.73 and 162,874.69

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Solution

The fourth proportional to 290,223.70, 400,486.73 and 162,874.69 is: 224,754.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,223.70 : 400,486.73 = 162,874.69 : x
  2. Step 2: Convert to fraction form
    290,223.70/400,486.73 = 162,874.69/x
  3. Step 3: Cross multiply
    290,223.70x = 400,486.73 × 162,874.69
  4. Step 4: Simplify right side
    290,223.70x = 65,229,150,793.05
  5. Step 5: Solve for x
    x = 65,229,150,793.05/290,223.70
  6. Step 6: Final answer
    x = 224,754.74

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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.