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Finding the Fourth Proportional to 203,490.40, 305,235.60 and 181,717.60

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Solution

The fourth proportional to 203,490.40, 305,235.60 and 181,717.60 is: 272,576.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,490.40 : 305,235.60 = 181,717.60 : x
  2. Step 2: Convert to fraction form
    203,490.40/305,235.60 = 181,717.60/x
  3. Step 3: Cross multiply
    203,490.40x = 305,235.60 × 181,717.60
  4. Step 4: Simplify right side
    203,490.40x = 55,466,680,666.56
  5. Step 5: Solve for x
    x = 55,466,680,666.56/203,490.40
  6. Step 6: Final answer
    x = 272,576.40

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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.