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Finding the Fourth Proportional to 427,872.08, 641,823 and 203,116.72

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Solution

The fourth proportional to 427,872.08, 641,823 and 203,116.72 is: 304,682.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,872.08 : 641,823 = 203,116.72 : x
  2. Step 2: Convert to fraction form
    427,872.08/641,823 = 203,116.72/x
  3. Step 3: Cross multiply
    427,872.08x = 641,823 × 203,116.72
  4. Step 4: Simplify right side
    427,872.08x = 130,364,982,580.56
  5. Step 5: Solve for x
    x = 130,364,982,580.56/427,872.08
  6. Step 6: Final answer
    x = 304,682.14

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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.