Home / 239,948.25-331,128.59-139,352.73

Finding the Fourth Proportional to 239,948.25, 331,128.59 and 139,352.73

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Solution

The fourth proportional to 239,948.25, 331,128.59 and 139,352.73 is: 192,306.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,948.25 : 331,128.59 = 139,352.73 : x
  2. Step 2: Convert to fraction form
    239,948.25/331,128.59 = 139,352.73/x
  3. Step 3: Cross multiply
    239,948.25x = 331,128.59 × 139,352.73
  4. Step 4: Simplify right side
    239,948.25x = 46,143,672,997.55
  5. Step 5: Solve for x
    x = 46,143,672,997.55/239,948.25
  6. Step 6: Final answer
    x = 192,306.77

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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.