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Finding the Fourth Proportional to 286,564.72, 395,343.84 and 173,190.64

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Solution

The fourth proportional to 286,564.72, 395,343.84 and 173,190.64 is: 238,933.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,564.72 : 395,343.84 = 173,190.64 : x
  2. Step 2: Convert to fraction form
    286,564.72/395,343.84 = 173,190.64/x
  3. Step 3: Cross multiply
    286,564.72x = 395,343.84 × 173,190.64
  4. Step 4: Simplify right side
    286,564.72x = 68,469,852,669.66
  5. Step 5: Solve for x
    x = 68,469,852,669.66/286,564.72
  6. Step 6: Final answer
    x = 238,933.29

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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.