Home / 389,968.17-538,167.11-220,227.81

Finding the Fourth Proportional to 389,968.17, 538,167.11 and 220,227.81

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Solution

The fourth proportional to 389,968.17, 538,167.11 and 220,227.81 is: 303,920.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,968.17 : 538,167.11 = 220,227.81 : x
  2. Step 2: Convert to fraction form
    389,968.17/538,167.11 = 220,227.81/x
  3. Step 3: Cross multiply
    389,968.17x = 538,167.11 × 220,227.81
  4. Step 4: Simplify right side
    389,968.17x = 118,519,364,049.33
  5. Step 5: Solve for x
    x = 118,519,364,049.33/389,968.17
  6. Step 6: Final answer
    x = 303,920.61

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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.