Home / 389,914.56-538,082.19-211,066.56

Finding the Fourth Proportional to 389,914.56, 538,082.19 and 211,066.56

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Solution

The fourth proportional to 389,914.56, 538,082.19 and 211,066.56 is: 291,271.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,914.56 : 538,082.19 = 211,066.56 : x
  2. Step 2: Convert to fraction form
    389,914.56/538,082.19 = 211,066.56/x
  3. Step 3: Cross multiply
    389,914.56x = 538,082.19 × 211,066.56
  4. Step 4: Simplify right side
    389,914.56x = 113,571,156,840.57
  5. Step 5: Solve for x
    x = 113,571,156,840.57/389,914.56
  6. Step 6: Final answer
    x = 291,271.91

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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.