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Finding the Fourth Proportional to 479,256.66, 718,990.83 and 142,324.74

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Solution

The fourth proportional to 479,256.66, 718,990.83 and 142,324.74 is: 213,518.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,256.66 : 718,990.83 = 142,324.74 : x
  2. Step 2: Convert to fraction form
    479,256.66/718,990.83 = 142,324.74/x
  3. Step 3: Cross multiply
    479,256.66x = 718,990.83 × 142,324.74
  4. Step 4: Simplify right side
    479,256.66x = 102,330,182,942.13
  5. Step 5: Solve for x
    x = 102,330,182,942.13/479,256.66
  6. Step 6: Final answer
    x = 213,518.54

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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.