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Finding the Fourth Proportional to 338,998.40, 508,481.40 and 114,336.80

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Solution

The fourth proportional to 338,998.40, 508,481.40 and 114,336.80 is: 171,499.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,998.40 : 508,481.40 = 114,336.80 : x
  2. Step 2: Convert to fraction form
    338,998.40/508,481.40 = 114,336.80/x
  3. Step 3: Cross multiply
    338,998.40x = 508,481.40 × 114,336.80
  4. Step 4: Simplify right side
    338,998.40x = 58,138,136,135.52
  5. Step 5: Solve for x
    x = 58,138,136,135.52/338,998.40
  6. Step 6: Final answer
    x = 171,499.74

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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.