Home / 405,918.68-608,806.74-125,438.36

Finding the Fourth Proportional to 405,918.68, 608,806.74 and 125,438.36

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Solution

The fourth proportional to 405,918.68, 608,806.74 and 125,438.36 is: 188,135.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,918.68 : 608,806.74 = 125,438.36 : x
  2. Step 2: Convert to fraction form
    405,918.68/608,806.74 = 125,438.36/x
  3. Step 3: Cross multiply
    405,918.68x = 608,806.74 × 125,438.36
  4. Step 4: Simplify right side
    405,918.68x = 76,367,719,022.55
  5. Step 5: Solve for x
    x = 76,367,719,022.55/405,918.68
  6. Step 6: Final answer
    x = 188,135.51

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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.