Home / 389,629.91-537,684.18-217,550.81

Finding the Fourth Proportional to 389,629.91, 537,684.18 and 217,550.81

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Solution

The fourth proportional to 389,629.91, 537,684.18 and 217,550.81 is: 300,217.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,629.91 : 537,684.18 = 217,550.81 : x
  2. Step 2: Convert to fraction form
    389,629.91/537,684.18 = 217,550.81/x
  3. Step 3: Cross multiply
    389,629.91x = 537,684.18 × 217,550.81
  4. Step 4: Simplify right side
    389,629.91x = 116,973,629,411.58
  5. Step 5: Solve for x
    x = 116,973,629,411.58/389,629.91
  6. Step 6: Final answer
    x = 300,217.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.