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Finding the Fourth Proportional to 352,907.97, 529,229.48 and 128,212.89

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Solution

The fourth proportional to 352,907.97, 529,229.48 and 128,212.89 is: 192,271.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,907.97 : 529,229.48 = 128,212.89 : x
  2. Step 2: Convert to fraction form
    352,907.97/529,229.48 = 128,212.89/x
  3. Step 3: Cross multiply
    352,907.97x = 529,229.48 × 128,212.89
  4. Step 4: Simplify right side
    352,907.97x = 67,854,040,462.93
  5. Step 5: Solve for x
    x = 67,854,040,462.93/352,907.97
  6. Step 6: Final answer
    x = 192,271.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.