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Finding the Fourth Proportional to 378,481.20, 567,831.36 and 112,248.12

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Solution

The fourth proportional to 378,481.20, 567,831.36 and 112,248.12 is: 168,404.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,481.20 : 567,831.36 = 112,248.12 : x
  2. Step 2: Convert to fraction form
    378,481.20/567,831.36 = 112,248.12/x
  3. Step 3: Cross multiply
    378,481.20x = 567,831.36 × 112,248.12
  4. Step 4: Simplify right side
    378,481.20x = 63,738,002,637.04
  5. Step 5: Solve for x
    x = 63,738,002,637.04/378,481.20
  6. Step 6: Final answer
    x = 168,404.67

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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.