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Finding the Fourth Proportional to 203,566.13, 305,037.80 and 108,809.79

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Solution

The fourth proportional to 203,566.13, 305,037.80 and 108,809.79 is: 163,048.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,566.13 : 305,037.80 = 108,809.79 : x
  2. Step 2: Convert to fraction form
    203,566.13/305,037.80 = 108,809.79/x
  3. Step 3: Cross multiply
    203,566.13x = 305,037.80 × 108,809.79
  4. Step 4: Simplify right side
    203,566.13x = 33,191,098,416.01
  5. Step 5: Solve for x
    x = 33,191,098,416.01/203,566.13
  6. Step 6: Final answer
    x = 163,048.24

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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.