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Finding the Fourth Proportional to 203,770.06, 305,585.87 and 70,619.20

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Solution

The fourth proportional to 203,770.06, 305,585.87 and 70,619.20 is: 105,904.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,770.06 : 305,585.87 = 70,619.20 : x
  2. Step 2: Convert to fraction form
    203,770.06/305,585.87 = 70,619.20/x
  3. Step 3: Cross multiply
    203,770.06x = 305,585.87 × 70,619.20
  4. Step 4: Simplify right side
    203,770.06x = 21,580,229,670.70
  5. Step 5: Solve for x
    x = 21,580,229,670.70/203,770.06
  6. Step 6: Final answer
    x = 105,904.81

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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.