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Finding the Fourth Proportional to 479,227.09, 718,717.62 and 142,188.01

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Solution

The fourth proportional to 479,227.09, 718,717.62 and 142,188.01 is: 213,245.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,227.09 : 718,717.62 = 142,188.01 : x
  2. Step 2: Convert to fraction form
    479,227.09/718,717.62 = 142,188.01/x
  3. Step 3: Cross multiply
    479,227.09x = 718,717.62 × 142,188.01
  4. Step 4: Simplify right side
    479,227.09x = 102,193,028,139.74
  5. Step 5: Solve for x
    x = 102,193,028,139.74/479,227.09
  6. Step 6: Final answer
    x = 213,245.52

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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.