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Finding the Fourth Proportional to 386,181.45, 579,272.22 and 105,698.70

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Solution

The fourth proportional to 386,181.45, 579,272.22 and 105,698.70 is: 158,548.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,181.45 : 579,272.22 = 105,698.70 : x
  2. Step 2: Convert to fraction form
    386,181.45/579,272.22 = 105,698.70/x
  3. Step 3: Cross multiply
    386,181.45x = 579,272.22 × 105,698.70
  4. Step 4: Simplify right side
    386,181.45x = 61,228,320,600.11
  5. Step 5: Solve for x
    x = 61,228,320,600.11/386,181.45
  6. Step 6: Final answer
    x = 158,548.06

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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.