Home / 389,511.37-537,615.26-228,418.30

Finding the Fourth Proportional to 389,511.37, 537,615.26 and 228,418.30

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Solution

The fourth proportional to 389,511.37, 537,615.26 and 228,418.30 is: 315,269.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,511.37 : 537,615.26 = 228,418.30 : x
  2. Step 2: Convert to fraction form
    389,511.37/537,615.26 = 228,418.30/x
  3. Step 3: Cross multiply
    389,511.37x = 537,615.26 × 228,418.30
  4. Step 4: Simplify right side
    389,511.37x = 122,801,163,743.26
  5. Step 5: Solve for x
    x = 122,801,163,743.26/389,511.37
  6. Step 6: Final answer
    x = 315,269.78

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1.5x scale

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.