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Finding the Fourth Proportional to 290,744.45, 436,111.17 and 158,466.48

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Solution

The fourth proportional to 290,744.45, 436,111.17 and 158,466.48 is: 237,696.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,744.45 : 436,111.17 = 158,466.48 : x
  2. Step 2: Convert to fraction form
    290,744.45/436,111.17 = 158,466.48/x
  3. Step 3: Cross multiply
    290,744.45x = 436,111.17 × 158,466.48
  4. Step 4: Simplify right side
    290,744.45x = 69,109,001,998.58
  5. Step 5: Solve for x
    x = 69,109,001,998.58/290,744.45
  6. Step 6: Final answer
    x = 237,696.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.