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Finding the Fourth Proportional to 228,244.38, 342,299.62 and 85,987

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Solution

The fourth proportional to 228,244.38, 342,299.62 and 85,987 is: 128,955.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,244.38 : 342,299.62 = 85,987 : x
  2. Step 2: Convert to fraction form
    228,244.38/342,299.62 = 85,987/x
  3. Step 3: Cross multiply
    228,244.38x = 342,299.62 × 85,987
  4. Step 4: Simplify right side
    228,244.38x = 29,433,317,424.94
  5. Step 5: Solve for x
    x = 29,433,317,424.94/228,244.38
  6. Step 6: Final answer
    x = 128,955.28

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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.