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Finding the Fourth Proportional to 306,061.80, 422,355.18 and 168,241.20

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Solution

The fourth proportional to 306,061.80, 422,355.18 and 168,241.20 is: 232,167.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,061.80 : 422,355.18 = 168,241.20 : x
  2. Step 2: Convert to fraction form
    306,061.80/422,355.18 = 168,241.20/x
  3. Step 3: Cross multiply
    306,061.80x = 422,355.18 × 168,241.20
  4. Step 4: Simplify right side
    306,061.80x = 71,057,542,309.42
  5. Step 5: Solve for x
    x = 71,057,542,309.42/306,061.80
  6. Step 6: Final answer
    x = 232,167.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.