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Finding the Fourth Proportional to 568,178.72, 852,046.68 and 212,999

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Solution

The fourth proportional to 568,178.72, 852,046.68 and 212,999 is: 319,415.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,178.72 : 852,046.68 = 212,999 : x
  2. Step 2: Convert to fraction form
    568,178.72/852,046.68 = 212,999/x
  3. Step 3: Cross multiply
    568,178.72x = 852,046.68 × 212,999
  4. Step 4: Simplify right side
    568,178.72x = 181,485,090,793.32
  5. Step 5: Solve for x
    x = 181,485,090,793.32/568,178.72
  6. Step 6: Final answer
    x = 319,415.50

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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.