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Finding the Fourth Proportional to 490,215.50, 735,323.26 and 157,791.50

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Solution

The fourth proportional to 490,215.50, 735,323.26 and 157,791.50 is: 236,687.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,215.50 : 735,323.26 = 157,791.50 : x
  2. Step 2: Convert to fraction form
    490,215.50/735,323.26 = 157,791.50/x
  3. Step 3: Cross multiply
    490,215.50x = 735,323.26 × 157,791.50
  4. Step 4: Simplify right side
    490,215.50x = 116,027,760,180.29
  5. Step 5: Solve for x
    x = 116,027,760,180.29/490,215.50
  6. Step 6: Final answer
    x = 236,687.25

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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.