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Finding the Fourth Proportional to 518,343.26, 777,462.33 and 139,214.73

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Solution

The fourth proportional to 518,343.26, 777,462.33 and 139,214.73 is: 208,807.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,343.26 : 777,462.33 = 139,214.73 : x
  2. Step 2: Convert to fraction form
    518,343.26/777,462.33 = 139,214.73/x
  3. Step 3: Cross multiply
    518,343.26x = 777,462.33 × 139,214.73
  4. Step 4: Simplify right side
    518,343.26x = 108,234,204,468.81
  5. Step 5: Solve for x
    x = 108,234,204,468.81/518,343.26
  6. Step 6: Final answer
    x = 208,807.97

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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.