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Finding the Fourth Proportional to 404,731.41, 606,991.29 and 120,345.37

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Solution

The fourth proportional to 404,731.41, 606,991.29 and 120,345.37 is: 180,486.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,731.41 : 606,991.29 = 120,345.37 : x
  2. Step 2: Convert to fraction form
    404,731.41/606,991.29 = 120,345.37/x
  3. Step 3: Cross multiply
    404,731.41x = 606,991.29 × 120,345.37
  4. Step 4: Simplify right side
    404,731.41x = 73,048,589,413.05
  5. Step 5: Solve for x
    x = 73,048,589,413.05/404,731.41
  6. Step 6: Final answer
    x = 180,486.59

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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.