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Finding the Fourth Proportional to 298,010.51, 446,967.75 and 81,818.81

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Solution

The fourth proportional to 298,010.51, 446,967.75 and 81,818.81 is: 122,715.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,010.51 : 446,967.75 = 81,818.81 : x
  2. Step 2: Convert to fraction form
    298,010.51/446,967.75 = 81,818.81/x
  3. Step 3: Cross multiply
    298,010.51x = 446,967.75 × 81,818.81
  4. Step 4: Simplify right side
    298,010.51x = 36,570,369,413.38
  5. Step 5: Solve for x
    x = 36,570,369,413.38/298,010.51
  6. Step 6: Final answer
    x = 122,715.03

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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.