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Finding the Fourth Proportional to 338,600.20, 508,005.60 and 138,936.82

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Solution

The fourth proportional to 338,600.20, 508,005.60 and 138,936.82 is: 208,448.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,600.20 : 508,005.60 = 138,936.82 : x
  2. Step 2: Convert to fraction form
    338,600.20/508,005.60 = 138,936.82/x
  3. Step 3: Cross multiply
    338,600.20x = 508,005.60 × 138,936.82
  4. Step 4: Simplify right side
    338,600.20x = 70,580,682,606.19
  5. Step 5: Solve for x
    x = 70,580,682,606.19/338,600.20
  6. Step 6: Final answer
    x = 208,448.44

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1.5x scale

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.