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Finding the Fourth Proportional to 345,392.78, 476,609.47 and 192,415.37

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Solution

The fourth proportional to 345,392.78, 476,609.47 and 192,415.37 is: 265,515.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,392.78 : 476,609.47 = 192,415.37 : x
  2. Step 2: Convert to fraction form
    345,392.78/476,609.47 = 192,415.37/x
  3. Step 3: Cross multiply
    345,392.78x = 476,609.47 × 192,415.37
  4. Step 4: Simplify right side
    345,392.78x = 91,706,984,651.47
  5. Step 5: Solve for x
    x = 91,706,984,651.47/345,392.78
  6. Step 6: Final answer
    x = 265,515.06

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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.