Home / 204,918.40-307,049.55-129,904.30

Finding the Fourth Proportional to 204,918.40, 307,049.55 and 129,904.30

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Solution

The fourth proportional to 204,918.40, 307,049.55 and 129,904.30 is: 194,648.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,918.40 : 307,049.55 = 129,904.30 : x
  2. Step 2: Convert to fraction form
    204,918.40/307,049.55 = 129,904.30/x
  3. Step 3: Cross multiply
    204,918.40x = 307,049.55 × 129,904.30
  4. Step 4: Simplify right side
    204,918.40x = 39,887,056,858.07
  5. Step 5: Solve for x
    x = 39,887,056,858.07/204,918.40
  6. Step 6: Final answer
    x = 194,648.49

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1.5x scale

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.