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Finding the Fourth Proportional to 245,135.16, 338,249.68 and 137,684.60

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Solution

The fourth proportional to 245,135.16, 338,249.68 and 137,684.60 is: 189,984.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,135.16 : 338,249.68 = 137,684.60 : x
  2. Step 2: Convert to fraction form
    245,135.16/338,249.68 = 137,684.60/x
  3. Step 3: Cross multiply
    245,135.16x = 338,249.68 × 137,684.60
  4. Step 4: Simplify right side
    245,135.16x = 46,571,771,890.93
  5. Step 5: Solve for x
    x = 46,571,771,890.93/245,135.16
  6. Step 6: Final answer
    x = 189,984.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.