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Finding the Fourth Proportional to 203,066.80, 304,879.70 and 103,294.50

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Solution

The fourth proportional to 203,066.80, 304,879.70 and 103,294.50 is: 155,083.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,066.80 : 304,879.70 = 103,294.50 : x
  2. Step 2: Convert to fraction form
    203,066.80/304,879.70 = 103,294.50/x
  3. Step 3: Cross multiply
    203,066.80x = 304,879.70 × 103,294.50
  4. Step 4: Simplify right side
    203,066.80x = 31,492,396,171.65
  5. Step 5: Solve for x
    x = 31,492,396,171.65/203,066.80
  6. Step 6: Final answer
    x = 155,083.92

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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.