Home / 391,949.28-540,825.05-230,745.51

Finding the Fourth Proportional to 391,949.28, 540,825.05 and 230,745.51

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Solution

The fourth proportional to 391,949.28, 540,825.05 and 230,745.51 is: 318,390.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,949.28 : 540,825.05 = 230,745.51 : x
  2. Step 2: Convert to fraction form
    391,949.28/540,825.05 = 230,745.51/x
  3. Step 3: Cross multiply
    391,949.28x = 540,825.05 × 230,745.51
  4. Step 4: Simplify right side
    391,949.28x = 124,792,952,559.89
  5. Step 5: Solve for x
    x = 124,792,952,559.89/391,949.28
  6. Step 6: Final answer
    x = 318,390.56

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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.