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Finding the Fourth Proportional to 330,413.11, 455,992.64 and 187,174.33

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Solution

The fourth proportional to 330,413.11, 455,992.64 and 187,174.33 is: 258,313.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,413.11 : 455,992.64 = 187,174.33 : x
  2. Step 2: Convert to fraction form
    330,413.11/455,992.64 = 187,174.33/x
  3. Step 3: Cross multiply
    330,413.11x = 455,992.64 × 187,174.33
  4. Step 4: Simplify right side
    330,413.11x = 85,350,115,502.98
  5. Step 5: Solve for x
    x = 85,350,115,502.98/330,413.11
  6. Step 6: Final answer
    x = 258,313.35

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1.5x scale

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.