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Finding the Fourth Proportional to 345,335, 518,076.60 and 195,647

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Solution

The fourth proportional to 345,335, 518,076.60 and 195,647 is: 293,512.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,335 : 518,076.60 = 195,647 : x
  2. Step 2: Convert to fraction form
    345,335/518,076.60 = 195,647/x
  3. Step 3: Cross multiply
    345,335x = 518,076.60 × 195,647
  4. Step 4: Simplify right side
    345,335x = 101,360,132,560.20
  5. Step 5: Solve for x
    x = 101,360,132,560.20/345,335
  6. Step 6: Final answer
    x = 293,512.48

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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.