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Finding the Fourth Proportional to 386,092.36, 579,138.54 and 105,612.04

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Solution

The fourth proportional to 386,092.36, 579,138.54 and 105,612.04 is: 158,418.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,092.36 : 579,138.54 = 105,612.04 : x
  2. Step 2: Convert to fraction form
    386,092.36/579,138.54 = 105,612.04/x
  3. Step 3: Cross multiply
    386,092.36x = 579,138.54 × 105,612.04
  4. Step 4: Simplify right side
    386,092.36x = 61,164,002,652.02
  5. Step 5: Solve for x
    x = 61,164,002,652.02/386,092.36
  6. Step 6: Final answer
    x = 158,418.06

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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.