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Finding the Fourth Proportional to 397,627.20, 596,440.80 and 240,163.20

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Solution

The fourth proportional to 397,627.20, 596,440.80 and 240,163.20 is: 360,244.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,627.20 : 596,440.80 = 240,163.20 : x
  2. Step 2: Convert to fraction form
    397,627.20/596,440.80 = 240,163.20/x
  3. Step 3: Cross multiply
    397,627.20x = 596,440.80 × 240,163.20
  4. Step 4: Simplify right side
    397,627.20x = 143,243,131,138.56
  5. Step 5: Solve for x
    x = 143,243,131,138.56/397,627.20
  6. Step 6: Final answer
    x = 360,244.80

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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.