Home / 387,914.72-535,324.98-215,839.97

Finding the Fourth Proportional to 387,914.72, 535,324.98 and 215,839.97

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Solution

The fourth proportional to 387,914.72, 535,324.98 and 215,839.97 is: 297,860.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,914.72 : 535,324.98 = 215,839.97 : x
  2. Step 2: Convert to fraction form
    387,914.72/535,324.98 = 215,839.97/x
  3. Step 3: Cross multiply
    387,914.72x = 535,324.98 × 215,839.97
  4. Step 4: Simplify right side
    387,914.72x = 115,544,524,436.94
  5. Step 5: Solve for x
    x = 115,544,524,436.94/387,914.72
  6. Step 6: Final answer
    x = 297,860.63

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1.5x scale

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.