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Finding the Fourth Proportional to 290,901.38, 401,493.21 and 168,376.02

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Solution

The fourth proportional to 290,901.38, 401,493.21 and 168,376.02 is: 232,387.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,901.38 : 401,493.21 = 168,376.02 : x
  2. Step 2: Convert to fraction form
    290,901.38/401,493.21 = 168,376.02/x
  3. Step 3: Cross multiply
    290,901.38x = 401,493.21 × 168,376.02
  4. Step 4: Simplify right side
    290,901.38x = 67,601,826,619.81
  5. Step 5: Solve for x
    x = 67,601,826,619.81/290,901.38
  6. Step 6: Final answer
    x = 232,387.44

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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.