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Finding the Fourth Proportional to 290,160.78, 400,422.09 and 162,836.36

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Solution

The fourth proportional to 290,160.78, 400,422.09 and 162,836.36 is: 224,714.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,160.78 : 400,422.09 = 162,836.36 : x
  2. Step 2: Convert to fraction form
    290,160.78/400,422.09 = 162,836.36/x
  3. Step 3: Cross multiply
    290,160.78x = 400,422.09 × 162,836.36
  4. Step 4: Simplify right side
    290,160.78x = 65,203,273,597.08
  5. Step 5: Solve for x
    x = 65,203,273,597.08/290,160.78
  6. Step 6: Final answer
    x = 224,714.29

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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.