Home / 405,921.21-608,917.58-106,400.76

Finding the Fourth Proportional to 405,921.21, 608,917.58 and 106,400.76

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Solution

The fourth proportional to 405,921.21, 608,917.58 and 106,400.76 is: 159,610.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,921.21 : 608,917.58 = 106,400.76 : x
  2. Step 2: Convert to fraction form
    405,921.21/608,917.58 = 106,400.76/x
  3. Step 3: Cross multiply
    405,921.21x = 608,917.58 × 106,400.76
  4. Step 4: Simplify right side
    405,921.21x = 64,789,293,289.36
  5. Step 5: Solve for x
    x = 64,789,293,289.36/405,921.21
  6. Step 6: Final answer
    x = 159,610.51

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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.