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Finding the Fourth Proportional to 268,285.80, 402,428.70 and 161,997.60

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Solution

The fourth proportional to 268,285.80, 402,428.70 and 161,997.60 is: 242,996.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,285.80 : 402,428.70 = 161,997.60 : x
  2. Step 2: Convert to fraction form
    268,285.80/402,428.70 = 161,997.60/x
  3. Step 3: Cross multiply
    268,285.80x = 402,428.70 × 161,997.60
  4. Step 4: Simplify right side
    268,285.80x = 65,192,483,571.12
  5. Step 5: Solve for x
    x = 65,192,483,571.12/268,285.80
  6. Step 6: Final answer
    x = 242,996.40

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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.