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Finding the Fourth Proportional to 395,169.24, 545,337.90 and 225,413.40

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Solution

The fourth proportional to 395,169.24, 545,337.90 and 225,413.40 is: 311,072.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,169.24 : 545,337.90 = 225,413.40 : x
  2. Step 2: Convert to fraction form
    395,169.24/545,337.90 = 225,413.40/x
  3. Step 3: Cross multiply
    395,169.24x = 545,337.90 × 225,413.40
  4. Step 4: Simplify right side
    395,169.24x = 122,926,470,187.86
  5. Step 5: Solve for x
    x = 122,926,470,187.86/395,169.24
  6. Step 6: Final answer
    x = 311,072.97

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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.