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Finding the Fourth Proportional to 290,976.76, 436,571.75 and 122,539.49

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Solution

The fourth proportional to 290,976.76, 436,571.75 and 122,539.49 is: 183,854.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,976.76 : 436,571.75 = 122,539.49 : x
  2. Step 2: Convert to fraction form
    290,976.76/436,571.75 = 122,539.49/x
  3. Step 3: Cross multiply
    290,976.76x = 436,571.75 × 122,539.49
  4. Step 4: Simplify right side
    290,976.76x = 53,497,277,716.90
  5. Step 5: Solve for x
    x = 53,497,277,716.90/290,976.76
  6. Step 6: Final answer
    x = 183,854.13

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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.