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Finding the Fourth Proportional to 479,219.58, 718,619.49 and 179,489.88

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Solution

The fourth proportional to 479,219.58, 718,619.49 and 179,489.88 is: 269,156.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,219.58 : 718,619.49 = 179,489.88 : x
  2. Step 2: Convert to fraction form
    479,219.58/718,619.49 = 179,489.88/x
  3. Step 3: Cross multiply
    479,219.58x = 718,619.49 × 179,489.88
  4. Step 4: Simplify right side
    479,219.58x = 128,984,926,025.76
  5. Step 5: Solve for x
    x = 128,984,926,025.76/479,219.58
  6. Step 6: Final answer
    x = 269,156.21

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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.