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Finding the Fourth Proportional to 386,799.60, 579,738.60 and 162,159.60

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Solution

The fourth proportional to 386,799.60, 579,738.60 and 162,159.60 is: 243,046.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,799.60 : 579,738.60 = 162,159.60 : x
  2. Step 2: Convert to fraction form
    386,799.60/579,738.60 = 162,159.60/x
  3. Step 3: Cross multiply
    386,799.60x = 579,738.60 × 162,159.60
  4. Step 4: Simplify right side
    386,799.60x = 94,010,179,480.56
  5. Step 5: Solve for x
    x = 94,010,179,480.56/386,799.60
  6. Step 6: Final answer
    x = 243,046.22

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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.