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Finding the Fourth Proportional to 445,164.80, 667,747.20 and 279,276.80

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Solution

The fourth proportional to 445,164.80, 667,747.20 and 279,276.80 is: 418,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,164.80 : 667,747.20 = 279,276.80 : x
  2. Step 2: Convert to fraction form
    445,164.80/667,747.20 = 279,276.80/x
  3. Step 3: Cross multiply
    445,164.80x = 667,747.20 × 279,276.80
  4. Step 4: Simplify right side
    445,164.80x = 186,486,301,224.96
  5. Step 5: Solve for x
    x = 186,486,301,224.96/445,164.80
  6. Step 6: Final answer
    x = 418,915.20

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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.