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Finding the Fourth Proportional to 351,612.78, 485,215.62 and 206,416.23

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Solution

The fourth proportional to 351,612.78, 485,215.62 and 206,416.23 is: 284,848.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,612.78 : 485,215.62 = 206,416.23 : x
  2. Step 2: Convert to fraction form
    351,612.78/485,215.62 = 206,416.23/x
  3. Step 3: Cross multiply
    351,612.78x = 485,215.62 × 206,416.23
  4. Step 4: Simplify right side
    351,612.78x = 100,156,379,017.51
  5. Step 5: Solve for x
    x = 100,156,379,017.51/351,612.78
  6. Step 6: Final answer
    x = 284,848.52

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1.5x scale

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.