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Finding the Fourth Proportional to 290,231.92, 399,805.04 and 247,072.28

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Solution

The fourth proportional to 290,231.92, 399,805.04 and 247,072.28 is: 340,351.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,231.92 : 399,805.04 = 247,072.28 : x
  2. Step 2: Convert to fraction form
    290,231.92/399,805.04 = 247,072.28/x
  3. Step 3: Cross multiply
    290,231.92x = 399,805.04 × 247,072.28
  4. Step 4: Simplify right side
    290,231.92x = 98,780,742,788.29
  5. Step 5: Solve for x
    x = 98,780,742,788.29/290,231.92
  6. Step 6: Final answer
    x = 340,351.06

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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.