Home / 258,895.15-388,395.68-109,135.46

Finding the Fourth Proportional to 258,895.15, 388,395.68 and 109,135.46

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Solution

The fourth proportional to 258,895.15, 388,395.68 and 109,135.46 is: 163,725.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,895.15 : 388,395.68 = 109,135.46 : x
  2. Step 2: Convert to fraction form
    258,895.15/388,395.68 = 109,135.46/x
  3. Step 3: Cross multiply
    258,895.15x = 388,395.68 × 109,135.46
  4. Step 4: Simplify right side
    258,895.15x = 42,387,741,624.12
  5. Step 5: Solve for x
    x = 42,387,741,624.12/258,895.15
  6. Step 6: Final answer
    x = 163,725.52

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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.