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Finding the Fourth Proportional to 203,631.60, 305,641.80 and 103,904.40

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Solution

The fourth proportional to 203,631.60, 305,641.80 and 103,904.40 is: 155,955.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,631.60 : 305,641.80 = 103,904.40 : x
  2. Step 2: Convert to fraction form
    203,631.60/305,641.80 = 103,904.40/x
  3. Step 3: Cross multiply
    203,631.60x = 305,641.80 × 103,904.40
  4. Step 4: Simplify right side
    203,631.60x = 31,757,527,843.92
  5. Step 5: Solve for x
    x = 31,757,527,843.92/203,631.60
  6. Step 6: Final answer
    x = 155,955.79

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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.