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Finding the Fourth Proportional to 342,076.78, 472,066.68 and 191,173.78

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Solution

The fourth proportional to 342,076.78, 472,066.68 and 191,173.78 is: 263,820.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,076.78 : 472,066.68 = 191,173.78 : x
  2. Step 2: Convert to fraction form
    342,076.78/472,066.68 = 191,173.78/x
  3. Step 3: Cross multiply
    342,076.78x = 472,066.68 × 191,173.78
  4. Step 4: Simplify right side
    342,076.78x = 90,246,771,627.65
  5. Step 5: Solve for x
    x = 90,246,771,627.65/342,076.78
  6. Step 6: Final answer
    x = 263,820.22

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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.