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Finding the Fourth Proportional to 290,654.55, 401,054.78 and 161,589.42

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Solution

The fourth proportional to 290,654.55, 401,054.78 and 161,589.42 is: 222,966.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,654.55 : 401,054.78 = 161,589.42 : x
  2. Step 2: Convert to fraction form
    290,654.55/401,054.78 = 161,589.42/x
  3. Step 3: Cross multiply
    290,654.55x = 401,054.78 × 161,589.42
  4. Step 4: Simplify right side
    290,654.55x = 64,806,209,692.40
  5. Step 5: Solve for x
    x = 64,806,209,692.40/290,654.55
  6. Step 6: Final answer
    x = 222,966.44

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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.