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Finding the Fourth Proportional to 288,755.06, 398,470.50 and 159,685.16

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Solution

The fourth proportional to 288,755.06, 398,470.50 and 159,685.16 is: 220,359.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,755.06 : 398,470.50 = 159,685.16 : x
  2. Step 2: Convert to fraction form
    288,755.06/398,470.50 = 159,685.16/x
  3. Step 3: Cross multiply
    288,755.06x = 398,470.50 × 159,685.16
  4. Step 4: Simplify right side
    288,755.06x = 63,629,823,555.43
  5. Step 5: Solve for x
    x = 63,629,823,555.43/288,755.06
  6. Step 6: Final answer
    x = 220,359.17

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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.