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Finding the Fourth Proportional to 228,144.66, 342,265.18 and 85,986.92

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Solution

The fourth proportional to 228,144.66, 342,265.18 and 85,986.92 is: 128,998.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,144.66 : 342,265.18 = 85,986.92 : x
  2. Step 2: Convert to fraction form
    228,144.66/342,265.18 = 85,986.92/x
  3. Step 3: Cross multiply
    228,144.66x = 342,265.18 × 85,986.92
  4. Step 4: Simplify right side
    228,144.66x = 29,430,328,651.45
  5. Step 5: Solve for x
    x = 29,430,328,651.45/228,144.66
  6. Step 6: Final answer
    x = 128,998.54

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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.