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Finding the Fourth Proportional to 262,128, 393,092.09 and 93,616.86

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Solution

The fourth proportional to 262,128, 393,092.09 and 93,616.86 is: 140,389.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,128 : 393,092.09 = 93,616.86 : x
  2. Step 2: Convert to fraction form
    262,128/393,092.09 = 93,616.86/x
  3. Step 3: Cross multiply
    262,128x = 393,092.09 × 93,616.86
  4. Step 4: Simplify right side
    262,128x = 36,800,046,688.55
  5. Step 5: Solve for x
    x = 36,800,046,688.55/262,128
  6. Step 6: Final answer
    x = 140,389.61

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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.