Home / 315,845.78-435,867.37-172,605.82

Finding the Fourth Proportional to 315,845.78, 435,867.37 and 172,605.82

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Solution

The fourth proportional to 315,845.78, 435,867.37 and 172,605.82 is: 238,196.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,845.78 : 435,867.37 = 172,605.82 : x
  2. Step 2: Convert to fraction form
    315,845.78/435,867.37 = 172,605.82/x
  3. Step 3: Cross multiply
    315,845.78x = 435,867.37 × 172,605.82
  4. Step 4: Simplify right side
    315,845.78x = 75,233,244,810.09
  5. Step 5: Solve for x
    x = 75,233,244,810.09/315,845.78
  6. Step 6: Final answer
    x = 238,196.14

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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.