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Finding the Fourth Proportional to 354,067.56, 531,322.74 and 143,705.48

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Solution

The fourth proportional to 354,067.56, 531,322.74 and 143,705.48 is: 215,648.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,067.56 : 531,322.74 = 143,705.48 : x
  2. Step 2: Convert to fraction form
    354,067.56/531,322.74 = 143,705.48/x
  3. Step 3: Cross multiply
    354,067.56x = 531,322.74 × 143,705.48
  4. Step 4: Simplify right side
    354,067.56x = 76,353,986,730.00
  5. Step 5: Solve for x
    x = 76,353,986,730.00/354,067.56
  6. Step 6: Final answer
    x = 215,648.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.