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Finding the Fourth Proportional to 212,773.60, 319,045.20 and 88,127.20

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Solution

The fourth proportional to 212,773.60, 319,045.20 and 88,127.20 is: 132,143.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,773.60 : 319,045.20 = 88,127.20 : x
  2. Step 2: Convert to fraction form
    212,773.60/319,045.20 = 88,127.20/x
  3. Step 3: Cross multiply
    212,773.60x = 319,045.20 × 88,127.20
  4. Step 4: Simplify right side
    212,773.60x = 28,116,560,149.44
  5. Step 5: Solve for x
    x = 28,116,560,149.44/212,773.60
  6. Step 6: Final answer
    x = 132,143.09

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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.