Home / 312,379.36-468,564.88-75,724.16

Finding the Fourth Proportional to 312,379.36, 468,564.88 and 75,724.16

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Solution

The fourth proportional to 312,379.36, 468,564.88 and 75,724.16 is: 113,585.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,379.36 : 468,564.88 = 75,724.16 : x
  2. Step 2: Convert to fraction form
    312,379.36/468,564.88 = 75,724.16/x
  3. Step 3: Cross multiply
    312,379.36x = 468,564.88 × 75,724.16
  4. Step 4: Simplify right side
    312,379.36x = 35,481,681,943.50
  5. Step 5: Solve for x
    x = 35,481,681,943.50/312,379.36
  6. Step 6: Final answer
    x = 113,585.23

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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.