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Finding the Fourth Proportional to 203,287.74, 305,128.65 and 98,180.70

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Solution

The fourth proportional to 203,287.74, 305,128.65 and 98,180.70 is: 147,366.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,287.74 : 305,128.65 = 98,180.70 : x
  2. Step 2: Convert to fraction form
    203,287.74/305,128.65 = 98,180.70/x
  3. Step 3: Cross multiply
    203,287.74x = 305,128.65 × 98,180.70
  4. Step 4: Simplify right side
    203,287.74x = 29,957,744,447.06
  5. Step 5: Solve for x
    x = 29,957,744,447.06/203,287.74
  6. Step 6: Final answer
    x = 147,366.21

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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.