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Finding the Fourth Proportional to 387,768.94, 535,121.15 and 226,759.28

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Solution

The fourth proportional to 387,768.94, 535,121.15 and 226,759.28 is: 312,927.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,768.94 : 535,121.15 = 226,759.28 : x
  2. Step 2: Convert to fraction form
    387,768.94/535,121.15 = 226,759.28/x
  3. Step 3: Cross multiply
    387,768.94x = 535,121.15 × 226,759.28
  4. Step 4: Simplify right side
    387,768.94x = 121,343,682,877.37
  5. Step 5: Solve for x
    x = 121,343,682,877.37/387,768.94
  6. Step 6: Final answer
    x = 312,927.81

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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.