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Finding the Fourth Proportional to 307,489.20, 461,320.20 and 149,722.80

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Solution

The fourth proportional to 307,489.20, 461,320.20 and 149,722.80 is: 224,626.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,489.20 : 461,320.20 = 149,722.80 : x
  2. Step 2: Convert to fraction form
    307,489.20/461,320.20 = 149,722.80/x
  3. Step 3: Cross multiply
    307,489.20x = 461,320.20 × 149,722.80
  4. Step 4: Simplify right side
    307,489.20x = 69,070,152,040.56
  5. Step 5: Solve for x
    x = 69,070,152,040.56/307,489.20
  6. Step 6: Final answer
    x = 224,626.27

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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.