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Finding the Fourth Proportional to 279,496.40, 419,212.20 and 79,847.60

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Solution

The fourth proportional to 279,496.40, 419,212.20 and 79,847.60 is: 119,762.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,496.40 : 419,212.20 = 79,847.60 : x
  2. Step 2: Convert to fraction form
    279,496.40/419,212.20 = 79,847.60/x
  3. Step 3: Cross multiply
    279,496.40x = 419,212.20 × 79,847.60
  4. Step 4: Simplify right side
    279,496.40x = 33,473,088,060.72
  5. Step 5: Solve for x
    x = 33,473,088,060.72/279,496.40
  6. Step 6: Final answer
    x = 119,762.14

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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.