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Finding the Fourth Proportional to 245,249.97, 367,968.36 and 85,343.67

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Solution

The fourth proportional to 245,249.97, 367,968.36 and 85,343.67 is: 128,048.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,249.97 : 367,968.36 = 85,343.67 : x
  2. Step 2: Convert to fraction form
    245,249.97/367,968.36 = 85,343.67/x
  3. Step 3: Cross multiply
    245,249.97x = 367,968.36 × 85,343.67
  4. Step 4: Simplify right side
    245,249.97x = 31,403,769,859.56
  5. Step 5: Solve for x
    x = 31,403,769,859.56/245,249.97
  6. Step 6: Final answer
    x = 128,048.01

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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.