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Finding the Fourth Proportional to 479,415.42, 718,936.20 and 179,732.66

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Solution

The fourth proportional to 479,415.42, 718,936.20 and 179,732.66 is: 269,528.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,415.42 : 718,936.20 = 179,732.66 : x
  2. Step 2: Convert to fraction form
    479,415.42/718,936.20 = 179,732.66/x
  3. Step 3: Cross multiply
    479,415.42x = 718,936.20 × 179,732.66
  4. Step 4: Simplify right side
    479,415.42x = 129,216,312,001.61
  5. Step 5: Solve for x
    x = 129,216,312,001.61/479,415.42
  6. Step 6: Final answer
    x = 269,528.90

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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.