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Finding the Fourth Proportional to 203,535.39, 305,333.17 and 70,379.90

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Solution

The fourth proportional to 203,535.39, 305,333.17 and 70,379.90 is: 105,580.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,535.39 : 305,333.17 = 70,379.90 : x
  2. Step 2: Convert to fraction form
    203,535.39/305,333.17 = 70,379.90/x
  3. Step 3: Cross multiply
    203,535.39x = 305,333.17 × 70,379.90
  4. Step 4: Simplify right side
    203,535.39x = 21,489,317,413.67
  5. Step 5: Solve for x
    x = 21,489,317,413.67/203,535.39
  6. Step 6: Final answer
    x = 105,580.25

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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.