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Finding the Fourth Proportional to 343,894.80, 515,404.80 and 166,018.80

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Solution

The fourth proportional to 343,894.80, 515,404.80 and 166,018.80 is: 248,817.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,894.80 : 515,404.80 = 166,018.80 : x
  2. Step 2: Convert to fraction form
    343,894.80/515,404.80 = 166,018.80/x
  3. Step 3: Cross multiply
    343,894.80x = 515,404.80 × 166,018.80
  4. Step 4: Simplify right side
    343,894.80x = 85,566,886,410.24
  5. Step 5: Solve for x
    x = 85,566,886,410.24/343,894.80
  6. Step 6: Final answer
    x = 248,817.04

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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.