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Finding the Fourth Proportional to 325,429.20, 488,581.20 and 207,622.80

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Solution

The fourth proportional to 325,429.20, 488,581.20 and 207,622.80 is: 311,713.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,429.20 : 488,581.20 = 207,622.80 : x
  2. Step 2: Convert to fraction form
    325,429.20/488,581.20 = 207,622.80/x
  3. Step 3: Cross multiply
    325,429.20x = 488,581.20 × 207,622.80
  4. Step 4: Simplify right side
    325,429.20x = 101,440,596,771.36
  5. Step 5: Solve for x
    x = 101,440,596,771.36/325,429.20
  6. Step 6: Final answer
    x = 311,713.26

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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.