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Finding the Fourth Proportional to 557,286.18, 768,782.25 and 330,771.30

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Solution

The fourth proportional to 557,286.18, 768,782.25 and 330,771.30 is: 456,302.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,286.18 : 768,782.25 = 330,771.30 : x
  2. Step 2: Convert to fraction form
    557,286.18/768,782.25 = 330,771.30/x
  3. Step 3: Cross multiply
    557,286.18x = 768,782.25 × 330,771.30
  4. Step 4: Simplify right side
    557,286.18x = 254,291,104,249.43
  5. Step 5: Solve for x
    x = 254,291,104,249.43/557,286.18
  6. Step 6: Final answer
    x = 456,302.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.