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Finding the Fourth Proportional to 570,517.21, 855,917.97 and 171,165.34

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Solution

The fourth proportional to 570,517.21, 855,917.97 and 171,165.34 is: 256,790.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,517.21 : 855,917.97 = 171,165.34 : x
  2. Step 2: Convert to fraction form
    570,517.21/855,917.97 = 171,165.34/x
  3. Step 3: Cross multiply
    570,517.21x = 855,917.97 × 171,165.34
  4. Step 4: Simplify right side
    570,517.21x = 146,503,490,347.16
  5. Step 5: Solve for x
    x = 146,503,490,347.16/570,517.21
  6. Step 6: Final answer
    x = 256,790.66

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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.