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Finding the Fourth Proportional to 279,272.12, 418,845.09 and 79,588.22

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Solution

The fourth proportional to 279,272.12, 418,845.09 and 79,588.22 is: 119,364.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,272.12 : 418,845.09 = 79,588.22 : x
  2. Step 2: Convert to fraction form
    279,272.12/418,845.09 = 79,588.22/x
  3. Step 3: Cross multiply
    279,272.12x = 418,845.09 × 79,588.22
  4. Step 4: Simplify right side
    279,272.12x = 33,335,135,168.84
  5. Step 5: Solve for x
    x = 33,335,135,168.84/279,272.12
  6. Step 6: Final answer
    x = 119,364.35

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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.