Home / 518,340.27-777,457.83-139,211.73

Finding the Fourth Proportional to 518,340.27, 777,457.83 and 139,211.73

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Solution

The fourth proportional to 518,340.27, 777,457.83 and 139,211.73 is: 208,803.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,340.27 : 777,457.83 = 139,211.73 : x
  2. Step 2: Convert to fraction form
    518,340.27/777,457.83 = 139,211.73/x
  3. Step 3: Cross multiply
    518,340.27x = 777,457.83 × 139,211.73
  4. Step 4: Simplify right side
    518,340.27x = 108,231,249,516.35
  5. Step 5: Solve for x
    x = 108,231,249,516.35/518,340.27
  6. Step 6: Final answer
    x = 208,803.47

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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.