Home / 387,912.03-535,325.13-215,843.73

Finding the Fourth Proportional to 387,912.03, 535,325.13 and 215,843.73

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Solution

The fourth proportional to 387,912.03, 535,325.13 and 215,843.73 is: 297,867.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,912.03 : 535,325.13 = 215,843.73 : x
  2. Step 2: Convert to fraction form
    387,912.03/535,325.13 = 215,843.73/x
  3. Step 3: Cross multiply
    387,912.03x = 535,325.13 × 215,843.73
  4. Step 4: Simplify right side
    387,912.03x = 115,546,572,821.94
  5. Step 5: Solve for x
    x = 115,546,572,821.94/387,912.03
  6. Step 6: Final answer
    x = 297,867.98

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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.