Home / 259,081.29-388,455.01-109,281.51

Finding the Fourth Proportional to 259,081.29, 388,455.01 and 109,281.51

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Solution

The fourth proportional to 259,081.29, 388,455.01 and 109,281.51 is: 163,851.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,081.29 : 388,455.01 = 109,281.51 : x
  2. Step 2: Convert to fraction form
    259,081.29/388,455.01 = 109,281.51/x
  3. Step 3: Cross multiply
    259,081.29x = 388,455.01 × 109,281.51
  4. Step 4: Simplify right side
    259,081.29x = 42,450,949,786.66
  5. Step 5: Solve for x
    x = 42,450,949,786.66/259,081.29
  6. Step 6: Final answer
    x = 163,851.85

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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.