Home / 258,844.06-388,105.26-109,007.20

Finding the Fourth Proportional to 258,844.06, 388,105.26 and 109,007.20

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Solution

The fourth proportional to 258,844.06, 388,105.26 and 109,007.20 is: 163,443.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,844.06 : 388,105.26 = 109,007.20 : x
  2. Step 2: Convert to fraction form
    258,844.06/388,105.26 = 109,007.20/x
  3. Step 3: Cross multiply
    258,844.06x = 388,105.26 × 109,007.20
  4. Step 4: Simplify right side
    258,844.06x = 42,306,267,697.87
  5. Step 5: Solve for x
    x = 42,306,267,697.87/258,844.06
  6. Step 6: Final answer
    x = 163,443.07

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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.