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Finding the Fourth Proportional to 399,852.73, 551,796.78 and 218,565.37

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Solution

The fourth proportional to 399,852.73, 551,796.78 and 218,565.37 is: 301,620.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,852.73 : 551,796.78 = 218,565.37 : x
  2. Step 2: Convert to fraction form
    399,852.73/551,796.78 = 218,565.37/x
  3. Step 3: Cross multiply
    399,852.73x = 551,796.78 × 218,565.37
  4. Step 4: Simplify right side
    399,852.73x = 120,603,667,385.51
  5. Step 5: Solve for x
    x = 120,603,667,385.51/399,852.73
  6. Step 6: Final answer
    x = 301,620.22

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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.