Home / 643,513.12-965,269.92-222,559.36

Finding the Fourth Proportional to 643,513.12, 965,269.92 and 222,559.36

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Solution

The fourth proportional to 643,513.12, 965,269.92 and 222,559.36 is: 333,839.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,513.12 : 965,269.92 = 222,559.36 : x
  2. Step 2: Convert to fraction form
    643,513.12/965,269.92 = 222,559.36/x
  3. Step 3: Cross multiply
    643,513.12x = 965,269.92 × 222,559.36
  4. Step 4: Simplify right side
    643,513.12x = 214,829,855,622.45
  5. Step 5: Solve for x
    x = 214,829,855,622.45/643,513.12
  6. Step 6: Final answer
    x = 333,839.12

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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.