Home / 219,710.30-303,197.49-129,074.53

Finding the Fourth Proportional to 219,710.30, 303,197.49 and 129,074.53

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Solution

The fourth proportional to 219,710.30, 303,197.49 and 129,074.53 is: 178,121.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,710.30 : 303,197.49 = 129,074.53 : x
  2. Step 2: Convert to fraction form
    219,710.30/303,197.49 = 129,074.53/x
  3. Step 3: Cross multiply
    219,710.30x = 303,197.49 × 129,074.53
  4. Step 4: Simplify right side
    219,710.30x = 39,135,072,760.94
  5. Step 5: Solve for x
    x = 39,135,072,760.94/219,710.30
  6. Step 6: Final answer
    x = 178,121.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.