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Finding the Fourth Proportional to 207,329.90, 310,980.06 and 80,946.47

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Solution

The fourth proportional to 207,329.90, 310,980.06 and 80,946.47 is: 121,413.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,329.90 : 310,980.06 = 80,946.47 : x
  2. Step 2: Convert to fraction form
    207,329.90/310,980.06 = 80,946.47/x
  3. Step 3: Cross multiply
    207,329.90x = 310,980.06 × 80,946.47
  4. Step 4: Simplify right side
    207,329.90x = 25,172,738,874.84
  5. Step 5: Solve for x
    x = 25,172,738,874.84/207,329.90
  6. Step 6: Final answer
    x = 121,413.94

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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.