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Finding the Fourth Proportional to 203,159.64, 304,782.40 and 60,999.78

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Solution

The fourth proportional to 203,159.64, 304,782.40 and 60,999.78 is: 91,512.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,159.64 : 304,782.40 = 60,999.78 : x
  2. Step 2: Convert to fraction form
    203,159.64/304,782.40 = 60,999.78/x
  3. Step 3: Cross multiply
    203,159.64x = 304,782.40 × 60,999.78
  4. Step 4: Simplify right side
    203,159.64x = 18,591,659,347.87
  5. Step 5: Solve for x
    x = 18,591,659,347.87/203,159.64
  6. Step 6: Final answer
    x = 91,512.56

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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.