Home / 259,337.16-388,991.97-79,422.53

Finding the Fourth Proportional to 259,337.16, 388,991.97 and 79,422.53

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Solution

The fourth proportional to 259,337.16, 388,991.97 and 79,422.53 is: 119,129.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,337.16 : 388,991.97 = 79,422.53 : x
  2. Step 2: Convert to fraction form
    259,337.16/388,991.97 = 79,422.53/x
  3. Step 3: Cross multiply
    259,337.16x = 388,991.97 × 79,422.53
  4. Step 4: Simplify right side
    259,337.16x = 30,894,724,462.12
  5. Step 5: Solve for x
    x = 30,894,724,462.12/259,337.16
  6. Step 6: Final answer
    x = 119,129.57

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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.