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Finding the Fourth Proportional to 330,874.77, 496,312.26 and 81,556.77

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Solution

The fourth proportional to 330,874.77, 496,312.26 and 81,556.77 is: 122,335.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,874.77 : 496,312.26 = 81,556.77 : x
  2. Step 2: Convert to fraction form
    330,874.77/496,312.26 = 81,556.77/x
  3. Step 3: Cross multiply
    330,874.77x = 496,312.26 × 81,556.77
  4. Step 4: Simplify right side
    330,874.77x = 40,477,624,837.00
  5. Step 5: Solve for x
    x = 40,477,624,837.00/330,874.77
  6. Step 6: Final answer
    x = 122,335.18

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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.