Home / 315,375.24-435,217.69-172,135.27

Finding the Fourth Proportional to 315,375.24, 435,217.69 and 172,135.27

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Solution

The fourth proportional to 315,375.24, 435,217.69 and 172,135.27 is: 237,546.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,375.24 : 435,217.69 = 172,135.27 : x
  2. Step 2: Convert to fraction form
    315,375.24/435,217.69 = 172,135.27/x
  3. Step 3: Cross multiply
    315,375.24x = 435,217.69 × 172,135.27
  4. Step 4: Simplify right side
    315,375.24x = 74,916,314,576.93
  5. Step 5: Solve for x
    x = 74,916,314,576.93/315,375.24
  6. Step 6: Final answer
    x = 237,546.60

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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.