Home / 257,306.36-355,049.53-144,129.11

Finding the Fourth Proportional to 257,306.36, 355,049.53 and 144,129.11

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Solution

The fourth proportional to 257,306.36, 355,049.53 and 144,129.11 is: 198,879.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,306.36 : 355,049.53 = 144,129.11 : x
  2. Step 2: Convert to fraction form
    257,306.36/355,049.53 = 144,129.11/x
  3. Step 3: Cross multiply
    257,306.36x = 355,049.53 × 144,129.11
  4. Step 4: Simplify right side
    257,306.36x = 51,172,970,629.25
  5. Step 5: Solve for x
    x = 51,172,970,629.25/257,306.36
  6. Step 6: Final answer
    x = 198,879.54

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1.5x scale

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.