Home / 389,968.23-538,167.20-220,227.87

Finding the Fourth Proportional to 389,968.23, 538,167.20 and 220,227.87

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Solution

The fourth proportional to 389,968.23, 538,167.20 and 220,227.87 is: 303,920.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,968.23 : 538,167.20 = 220,227.87 : x
  2. Step 2: Convert to fraction form
    389,968.23/538,167.20 = 220,227.87/x
  3. Step 3: Cross multiply
    389,968.23x = 538,167.20 × 220,227.87
  4. Step 4: Simplify right side
    389,968.23x = 118,519,415,058.73
  5. Step 5: Solve for x
    x = 118,519,415,058.73/389,968.23
  6. Step 6: Final answer
    x = 303,920.69

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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.