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Finding the Fourth Proportional to 279,352.32, 418,959.10 and 79,674.45

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Solution

The fourth proportional to 279,352.32, 418,959.10 and 79,674.45 is: 119,491.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,352.32 : 418,959.10 = 79,674.45 : x
  2. Step 2: Convert to fraction form
    279,352.32/418,959.10 = 79,674.45/x
  3. Step 3: Cross multiply
    279,352.32x = 418,959.10 × 79,674.45
  4. Step 4: Simplify right side
    279,352.32x = 33,380,335,865.00
  5. Step 5: Solve for x
    x = 33,380,335,865.00/279,352.32
  6. Step 6: Final answer
    x = 119,491.89

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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.