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Finding the Fourth Proportional to 171,431.10, 239,413.05 and 171,431.10

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Solution

The fourth proportional to 171,431.10, 239,413.05 and 171,431.10 is: 239,413.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,431.10 : 239,413.05 = 171,431.10 : x
  2. Step 2: Convert to fraction form
    171,431.10/239,413.05 = 171,431.10/x
  3. Step 3: Cross multiply
    171,431.10x = 239,413.05 × 171,431.10
  4. Step 4: Simplify right side
    171,431.10x = 41,042,842,515.86
  5. Step 5: Solve for x
    x = 41,042,842,515.86/171,431.10
  6. Step 6: Final answer
    x = 239,413.05

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.