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Finding the Fourth Proportional to 203,811.80, 306,009.30 and 144,908.60

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Solution

The fourth proportional to 203,811.80, 306,009.30 and 144,908.60 is: 217,570.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,811.80 : 306,009.30 = 144,908.60 : x
  2. Step 2: Convert to fraction form
    203,811.80/306,009.30 = 144,908.60/x
  3. Step 3: Cross multiply
    203,811.80x = 306,009.30 × 144,908.60
  4. Step 4: Simplify right side
    203,811.80x = 44,343,379,249.98
  5. Step 5: Solve for x
    x = 44,343,379,249.98/203,811.80
  6. Step 6: Final answer
    x = 217,570.23

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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.