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Finding the Fourth Proportional to 279,788.96, 386,096.76 and 158,929.88

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Solution

The fourth proportional to 279,788.96, 386,096.76 and 158,929.88 is: 219,316.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,788.96 : 386,096.76 = 158,929.88 : x
  2. Step 2: Convert to fraction form
    279,788.96/386,096.76 = 158,929.88/x
  3. Step 3: Cross multiply
    279,788.96x = 386,096.76 × 158,929.88
  4. Step 4: Simplify right side
    279,788.96x = 61,362,311,735.19
  5. Step 5: Solve for x
    x = 61,362,311,735.19/279,788.96
  6. Step 6: Final answer
    x = 219,316.42

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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.