Home / 389,865.25-538,014.18-220,110.31

Finding the Fourth Proportional to 389,865.25, 538,014.18 and 220,110.31

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Solution

The fourth proportional to 389,865.25, 538,014.18 and 220,110.31 is: 303,752.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,865.25 : 538,014.18 = 220,110.31 : x
  2. Step 2: Convert to fraction form
    389,865.25/538,014.18 = 220,110.31/x
  3. Step 3: Cross multiply
    389,865.25x = 538,014.18 × 220,110.31
  4. Step 4: Simplify right side
    389,865.25x = 118,422,467,944.20
  5. Step 5: Solve for x
    x = 118,422,467,944.20/389,865.25
  6. Step 6: Final answer
    x = 303,752.30

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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.