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Finding the Fourth Proportional to 290,466.89, 400,836.30 and 161,402.02

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Solution

The fourth proportional to 290,466.89, 400,836.30 and 161,402.02 is: 222,730.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,466.89 : 400,836.30 = 161,402.02 : x
  2. Step 2: Convert to fraction form
    290,466.89/400,836.30 = 161,402.02/x
  3. Step 3: Cross multiply
    290,466.89x = 400,836.30 × 161,402.02
  4. Step 4: Simplify right side
    290,466.89x = 64,695,787,507.24
  5. Step 5: Solve for x
    x = 64,695,787,507.24/290,466.89
  6. Step 6: Final answer
    x = 222,730.34

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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.