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Finding the Fourth Proportional to 454,990.30, 682,485.45 and 202,270.30

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Solution

The fourth proportional to 454,990.30, 682,485.45 and 202,270.30 is: 303,405.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,990.30 : 682,485.45 = 202,270.30 : x
  2. Step 2: Convert to fraction form
    454,990.30/682,485.45 = 202,270.30/x
  3. Step 3: Cross multiply
    454,990.30x = 682,485.45 × 202,270.30
  4. Step 4: Simplify right side
    454,990.30x = 138,046,536,717.14
  5. Step 5: Solve for x
    x = 138,046,536,717.14/454,990.30
  6. Step 6: Final answer
    x = 303,405.45

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Double scale
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Similar ratio
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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.