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Finding the Fourth Proportional to 290,912.36, 401,464.50 and 170,063.96

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Solution

The fourth proportional to 290,912.36, 401,464.50 and 170,063.96 is: 234,691.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,912.36 : 401,464.50 = 170,063.96 : x
  2. Step 2: Convert to fraction form
    290,912.36/401,464.50 = 170,063.96/x
  3. Step 3: Cross multiply
    290,912.36x = 401,464.50 × 170,063.96
  4. Step 4: Simplify right side
    290,912.36x = 68,274,642,669.42
  5. Step 5: Solve for x
    x = 68,274,642,669.42/290,912.36
  6. Step 6: Final answer
    x = 234,691.45

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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.