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Finding the Fourth Proportional to 245,241.12, 338,440.72 and 137,831.84

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Solution

The fourth proportional to 245,241.12, 338,440.72 and 137,831.84 is: 190,212.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,241.12 : 338,440.72 = 137,831.84 : x
  2. Step 2: Convert to fraction form
    245,241.12/338,440.72 = 137,831.84/x
  3. Step 3: Cross multiply
    245,241.12x = 338,440.72 × 137,831.84
  4. Step 4: Simplify right side
    245,241.12x = 46,647,907,168.52
  5. Step 5: Solve for x
    x = 46,647,907,168.52/245,241.12
  6. Step 6: Final answer
    x = 190,212.42

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1.5x scale

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.