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Finding the Fourth Proportional to 203,552.15, 304,919.98 and 103,708.31

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Solution

The fourth proportional to 203,552.15, 304,919.98 and 103,708.31 is: 155,354.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,552.15 : 304,919.98 = 103,708.31 : x
  2. Step 2: Convert to fraction form
    203,552.15/304,919.98 = 103,708.31/x
  3. Step 3: Cross multiply
    203,552.15x = 304,919.98 × 103,708.31
  4. Step 4: Simplify right side
    203,552.15x = 31,622,734,027.16
  5. Step 5: Solve for x
    x = 31,622,734,027.16/203,552.15
  6. Step 6: Final answer
    x = 155,354.46

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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.