Home / 221,296.20-331,506.90-121,277.40

Finding the Fourth Proportional to 221,296.20, 331,506.90 and 121,277.40

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Solution

The fourth proportional to 221,296.20, 331,506.90 and 121,277.40 is: 181,676.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,296.20 : 331,506.90 = 121,277.40 : x
  2. Step 2: Convert to fraction form
    221,296.20/331,506.90 = 121,277.40/x
  3. Step 3: Cross multiply
    221,296.20x = 331,506.90 × 121,277.40
  4. Step 4: Simplify right side
    221,296.20x = 40,204,294,914.06
  5. Step 5: Solve for x
    x = 40,204,294,914.06/221,296.20
  6. Step 6: Final answer
    x = 181,676.39

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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.