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Finding the Fourth Proportional to 212,573.52, 318,878.64 and 54,800.64

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Solution

The fourth proportional to 212,573.52, 318,878.64 and 54,800.64 is: 82,205.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,573.52 : 318,878.64 = 54,800.64 : x
  2. Step 2: Convert to fraction form
    212,573.52/318,878.64 = 54,800.64/x
  3. Step 3: Cross multiply
    212,573.52x = 318,878.64 × 54,800.64
  4. Step 4: Simplify right side
    212,573.52x = 17,474,753,554.33
  5. Step 5: Solve for x
    x = 17,474,753,554.33/212,573.52
  6. Step 6: Final answer
    x = 82,205.69

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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.