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Finding the Fourth Proportional to 285,488.72, 427,912.28 and 135,606.32

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Solution

The fourth proportional to 285,488.72, 427,912.28 and 135,606.32 is: 203,257.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,488.72 : 427,912.28 = 135,606.32 : x
  2. Step 2: Convert to fraction form
    285,488.72/427,912.28 = 135,606.32/x
  3. Step 3: Cross multiply
    285,488.72x = 427,912.28 × 135,606.32
  4. Step 4: Simplify right side
    285,488.72x = 58,027,609,573.61
  5. Step 5: Solve for x
    x = 58,027,609,573.61/285,488.72
  6. Step 6: Final answer
    x = 203,257.10

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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.