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Finding the Fourth Proportional to 419,883.39, 579,380.64 and 247,808.55

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Solution

The fourth proportional to 419,883.39, 579,380.64 and 247,808.55 is: 341,941.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,883.39 : 579,380.64 = 247,808.55 : x
  2. Step 2: Convert to fraction form
    419,883.39/579,380.64 = 247,808.55/x
  3. Step 3: Cross multiply
    419,883.39x = 579,380.64 × 247,808.55
  4. Step 4: Simplify right side
    419,883.39x = 143,575,476,296.47
  5. Step 5: Solve for x
    x = 143,575,476,296.47/419,883.39
  6. Step 6: Final answer
    x = 341,941.31

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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.