Home / 315,635.05-435,576.37-172,395.43

Finding the Fourth Proportional to 315,635.05, 435,576.37 and 172,395.43

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Solution

The fourth proportional to 315,635.05, 435,576.37 and 172,395.43 is: 237,905.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,635.05 : 435,576.37 = 172,395.43 : x
  2. Step 2: Convert to fraction form
    315,635.05/435,576.37 = 172,395.43/x
  3. Step 3: Cross multiply
    315,635.05x = 435,576.37 × 172,395.43
  4. Step 4: Simplify right side
    315,635.05x = 75,091,374,742.01
  5. Step 5: Solve for x
    x = 75,091,374,742.01/315,635.05
  6. Step 6: Final answer
    x = 237,905.69

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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.