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Finding the Fourth Proportional to 243,401.84, 335,912.70 and 140,067.68

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Solution

The fourth proportional to 243,401.84, 335,912.70 and 140,067.68 is: 193,303.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,401.84 : 335,912.70 = 140,067.68 : x
  2. Step 2: Convert to fraction form
    243,401.84/335,912.70 = 140,067.68/x
  3. Step 3: Cross multiply
    243,401.84x = 335,912.70 × 140,067.68
  4. Step 4: Simplify right side
    243,401.84x = 47,050,512,571.54
  5. Step 5: Solve for x
    x = 47,050,512,571.54/243,401.84
  6. Step 6: Final answer
    x = 193,303.85

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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.