Home / 308,986.20-463,479.30-109,531.80

Finding the Fourth Proportional to 308,986.20, 463,479.30 and 109,531.80

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Solution

The fourth proportional to 308,986.20, 463,479.30 and 109,531.80 is: 164,297.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,986.20 : 463,479.30 = 109,531.80 : x
  2. Step 2: Convert to fraction form
    308,986.20/463,479.30 = 109,531.80/x
  3. Step 3: Cross multiply
    308,986.20x = 463,479.30 × 109,531.80
  4. Step 4: Simplify right side
    308,986.20x = 50,765,721,991.74
  5. Step 5: Solve for x
    x = 50,765,721,991.74/308,986.20
  6. Step 6: Final answer
    x = 164,297.70

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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.