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Finding the Fourth Proportional to 352,679.56, 486,742.26 and 218,563.72

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Solution

The fourth proportional to 352,679.56, 486,742.26 and 218,563.72 is: 301,645.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,679.56 : 486,742.26 = 218,563.72 : x
  2. Step 2: Convert to fraction form
    352,679.56/486,742.26 = 218,563.72/x
  3. Step 3: Cross multiply
    352,679.56x = 486,742.26 × 218,563.72
  4. Step 4: Simplify right side
    352,679.56x = 106,384,199,026.81
  5. Step 5: Solve for x
    x = 106,384,199,026.81/352,679.56
  6. Step 6: Final answer
    x = 301,645.49

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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.