Home / 258,920.94-388,386.27-71,937.30

Finding the Fourth Proportional to 258,920.94, 388,386.27 and 71,937.30

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Solution

The fourth proportional to 258,920.94, 388,386.27 and 71,937.30 is: 107,907.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,920.94 : 388,386.27 = 71,937.30 : x
  2. Step 2: Convert to fraction form
    258,920.94/388,386.27 = 71,937.30/x
  3. Step 3: Cross multiply
    258,920.94x = 388,386.27 × 71,937.30
  4. Step 4: Simplify right side
    258,920.94x = 27,939,459,620.87
  5. Step 5: Solve for x
    x = 27,939,459,620.87/258,920.94
  6. Step 6: Final answer
    x = 107,907.30

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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.