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Finding the Fourth Proportional to 354,238.56, 531,365.14 and 143,732.52

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Solution

The fourth proportional to 354,238.56, 531,365.14 and 143,732.52 is: 215,601.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,238.56 : 531,365.14 = 143,732.52 : x
  2. Step 2: Convert to fraction form
    354,238.56/531,365.14 = 143,732.52/x
  3. Step 3: Cross multiply
    354,238.56x = 531,365.14 × 143,732.52
  4. Step 4: Simplify right side
    354,238.56x = 76,374,450,612.35
  5. Step 5: Solve for x
    x = 76,374,450,612.35/354,238.56
  6. Step 6: Final answer
    x = 215,601.74

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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.