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Finding the Fourth Proportional to 389,838.90, 537,982.17 and 228,696.69

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Solution

The fourth proportional to 389,838.90, 537,982.17 and 228,696.69 is: 315,604.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,838.90 : 537,982.17 = 228,696.69 : x
  2. Step 2: Convert to fraction form
    389,838.90/537,982.17 = 228,696.69/x
  3. Step 3: Cross multiply
    389,838.90x = 537,982.17 × 228,696.69
  4. Step 4: Simplify right side
    389,838.90x = 123,034,741,558.02
  5. Step 5: Solve for x
    x = 123,034,741,558.02/389,838.90
  6. Step 6: Final answer
    x = 315,604.07

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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.