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Finding the Fourth Proportional to 479,046.53, 718,447.19 and 142,008.39

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Solution

The fourth proportional to 479,046.53, 718,447.19 and 142,008.39 is: 212,976.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,046.53 : 718,447.19 = 142,008.39 : x
  2. Step 2: Convert to fraction form
    479,046.53/718,447.19 = 142,008.39/x
  3. Step 3: Cross multiply
    479,046.53x = 718,447.19 × 142,008.39
  4. Step 4: Simplify right side
    479,046.53x = 102,025,528,041.88
  5. Step 5: Solve for x
    x = 102,025,528,041.88/479,046.53
  6. Step 6: Final answer
    x = 212,976.24

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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.