Home / 389,914.76-538,052.34-220,165.64

Finding the Fourth Proportional to 389,914.76, 538,052.34 and 220,165.64

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Solution

The fourth proportional to 389,914.76, 538,052.34 and 220,165.64 is: 303,811.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,914.76 : 538,052.34 = 220,165.64 : x
  2. Step 2: Convert to fraction form
    389,914.76/538,052.34 = 220,165.64/x
  3. Step 3: Cross multiply
    389,914.76x = 538,052.34 × 220,165.64
  4. Step 4: Simplify right side
    389,914.76x = 118,460,637,789.60
  5. Step 5: Solve for x
    x = 118,460,637,789.60/389,914.76
  6. Step 6: Final answer
    x = 303,811.63

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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.