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Finding the Fourth Proportional to 203,817.47, 305,759.00 and 70,776.79

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Solution

The fourth proportional to 203,817.47, 305,759.00 and 70,776.79 is: 106,176.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,817.47 : 305,759.00 = 70,776.79 : x
  2. Step 2: Convert to fraction form
    203,817.47/305,759.00 = 70,776.79/x
  3. Step 3: Cross multiply
    203,817.47x = 305,759.00 × 70,776.79
  4. Step 4: Simplify right side
    203,817.47x = 21,640,639,946.15
  5. Step 5: Solve for x
    x = 21,640,639,946.15/203,817.47
  6. Step 6: Final answer
    x = 106,176.57

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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.