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Finding the Fourth Proportional to 290,981.67, 436,705.79 and 150,780.39

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Solution

The fourth proportional to 290,981.67, 436,705.79 and 150,780.39 is: 226,291.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,981.67 : 436,705.79 = 150,780.39 : x
  2. Step 2: Convert to fraction form
    290,981.67/436,705.79 = 150,780.39/x
  3. Step 3: Cross multiply
    290,981.67x = 436,705.79 × 150,780.39
  4. Step 4: Simplify right side
    290,981.67x = 65,846,668,577.56
  5. Step 5: Solve for x
    x = 65,846,668,577.56/290,981.67
  6. Step 6: Final answer
    x = 226,291.47

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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.