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Finding the Fourth Proportional to 485,755.75, 728,682.23 and 148,792.51

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Solution

The fourth proportional to 485,755.75, 728,682.23 and 148,792.51 is: 223,203.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,755.75 : 728,682.23 = 148,792.51 : x
  2. Step 2: Convert to fraction form
    485,755.75/728,682.23 = 148,792.51/x
  3. Step 3: Cross multiply
    485,755.75x = 728,682.23 × 148,792.51
  4. Step 4: Simplify right side
    485,755.75x = 108,422,456,544.37
  5. Step 5: Solve for x
    x = 108,422,456,544.37/485,755.75
  6. Step 6: Final answer
    x = 223,203.65

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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.