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Finding the Fourth Proportional to 290,087.57, 400,314.51 and 161,018.46

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Solution

The fourth proportional to 290,087.57, 400,314.51 and 161,018.46 is: 222,201.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,087.57 : 400,314.51 = 161,018.46 : x
  2. Step 2: Convert to fraction form
    290,087.57/400,314.51 = 161,018.46/x
  3. Step 3: Cross multiply
    290,087.57x = 400,314.51 × 161,018.46
  4. Step 4: Simplify right side
    290,087.57x = 64,458,025,915.85
  5. Step 5: Solve for x
    x = 64,458,025,915.85/290,087.57
  6. Step 6: Final answer
    x = 222,201.96

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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.