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Finding the Fourth Proportional to 279,213.60, 418,820.40 and 167,239.20

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Solution

The fourth proportional to 279,213.60, 418,820.40 and 167,239.20 is: 250,858.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,213.60 : 418,820.40 = 167,239.20 : x
  2. Step 2: Convert to fraction form
    279,213.60/418,820.40 = 167,239.20/x
  3. Step 3: Cross multiply
    279,213.60x = 418,820.40 × 167,239.20
  4. Step 4: Simplify right side
    279,213.60x = 70,043,188,639.68
  5. Step 5: Solve for x
    x = 70,043,188,639.68/279,213.60
  6. Step 6: Final answer
    x = 250,858.80

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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.