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Finding the Fourth Proportional to 308,778.20, 463,167.30 and 208,986.20

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Solution

The fourth proportional to 308,778.20, 463,167.30 and 208,986.20 is: 313,479.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,778.20 : 463,167.30 = 208,986.20 : x
  2. Step 2: Convert to fraction form
    308,778.20/463,167.30 = 208,986.20/x
  3. Step 3: Cross multiply
    308,778.20x = 463,167.30 × 208,986.20
  4. Step 4: Simplify right side
    308,778.20x = 96,795,573,991.26
  5. Step 5: Solve for x
    x = 96,795,573,991.26/308,778.20
  6. Step 6: Final answer
    x = 313,479.30

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1.5x scale

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.