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Finding the Fourth Proportional to 298,042.61, 447,015.51 and 81,850.77

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Solution

The fourth proportional to 298,042.61, 447,015.51 and 81,850.77 is: 122,762.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,042.61 : 447,015.51 = 81,850.77 : x
  2. Step 2: Convert to fraction form
    298,042.61/447,015.51 = 81,850.77/x
  3. Step 3: Cross multiply
    298,042.61x = 447,015.51 × 81,850.77
  4. Step 4: Simplify right side
    298,042.61x = 36,588,563,695.44
  5. Step 5: Solve for x
    x = 36,588,563,695.44/298,042.61
  6. Step 6: Final answer
    x = 122,762.86

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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.