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Finding the Fourth Proportional to 286,757.60, 395,747.65 and 172,040.56

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Solution

The fourth proportional to 286,757.60, 395,747.65 and 172,040.56 is: 237,429.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,757.60 : 395,747.65 = 172,040.56 : x
  2. Step 2: Convert to fraction form
    286,757.60/395,747.65 = 172,040.56/x
  3. Step 3: Cross multiply
    286,757.60x = 395,747.65 × 172,040.56
  4. Step 4: Simplify right side
    286,757.60x = 68,084,644,915.84
  5. Step 5: Solve for x
    x = 68,084,644,915.84/286,757.60
  6. Step 6: Final answer
    x = 237,429.26

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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.