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Finding the Fourth Proportional to 290,770.70, 436,098.55 and 276,351.94

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Solution

The fourth proportional to 290,770.70, 436,098.55 and 276,351.94 is: 414,473.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,770.70 : 436,098.55 = 276,351.94 : x
  2. Step 2: Convert to fraction form
    290,770.70/436,098.55 = 276,351.94/x
  3. Step 3: Cross multiply
    290,770.70x = 436,098.55 × 276,351.94
  4. Step 4: Simplify right side
    290,770.70x = 120,516,680,696.09
  5. Step 5: Solve for x
    x = 120,516,680,696.09/290,770.70
  6. Step 6: Final answer
    x = 414,473.27

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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.