Home / 228,515.44-342,563.25-78,720.12

Finding the Fourth Proportional to 228,515.44, 342,563.25 and 78,720.12

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Solution

The fourth proportional to 228,515.44, 342,563.25 and 78,720.12 is: 118,007.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,515.44 : 342,563.25 = 78,720.12 : x
  2. Step 2: Convert to fraction form
    228,515.44/342,563.25 = 78,720.12/x
  3. Step 3: Cross multiply
    228,515.44x = 342,563.25 × 78,720.12
  4. Step 4: Simplify right side
    228,515.44x = 26,966,619,972.31
  5. Step 5: Solve for x
    x = 26,966,619,972.31/228,515.44
  6. Step 6: Final answer
    x = 118,007.87

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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.