Home / 258,785.11-357,145.32-145,629.73

Finding the Fourth Proportional to 258,785.11, 357,145.32 and 145,629.73

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Solution

The fourth proportional to 258,785.11, 357,145.32 and 145,629.73 is: 200,981.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,785.11 : 357,145.32 = 145,629.73 : x
  2. Step 2: Convert to fraction form
    258,785.11/357,145.32 = 145,629.73/x
  3. Step 3: Cross multiply
    258,785.11x = 357,145.32 × 145,629.73
  4. Step 4: Simplify right side
    258,785.11x = 52,010,976,522.36
  5. Step 5: Solve for x
    x = 52,010,976,522.36/258,785.11
  6. Step 6: Final answer
    x = 200,981.33

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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.