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Finding the Fourth Proportional to 287,887.97, 397,285.93 and 160,571.77

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Solution

The fourth proportional to 287,887.97, 397,285.93 and 160,571.77 is: 221,589.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,887.97 : 397,285.93 = 160,571.77 : x
  2. Step 2: Convert to fraction form
    287,887.97/397,285.93 = 160,571.77/x
  3. Step 3: Cross multiply
    287,887.97x = 397,285.93 × 160,571.77
  4. Step 4: Simplify right side
    287,887.97x = 63,792,904,183.70
  5. Step 5: Solve for x
    x = 63,792,904,183.70/287,887.97
  6. Step 6: Final answer
    x = 221,589.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.