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Finding the Fourth Proportional to 354,450.42, 531,216.36 and 143,973.54

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Solution

The fourth proportional to 354,450.42, 531,216.36 and 143,973.54 is: 215,773.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,450.42 : 531,216.36 = 143,973.54 : x
  2. Step 2: Convert to fraction form
    354,450.42/531,216.36 = 143,973.54/x
  3. Step 3: Cross multiply
    354,450.42x = 531,216.36 × 143,973.54
  4. Step 4: Simplify right side
    354,450.42x = 76,481,099,855.11
  5. Step 5: Solve for x
    x = 76,481,099,855.11/354,450.42
  6. Step 6: Final answer
    x = 215,773.76

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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.