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Finding the Fourth Proportional to 279,804.56, 386,119.05 and 152,477.42

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Solution

The fourth proportional to 279,804.56, 386,119.05 and 152,477.42 is: 210,412.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,804.56 : 386,119.05 = 152,477.42 : x
  2. Step 2: Convert to fraction form
    279,804.56/386,119.05 = 152,477.42/x
  3. Step 3: Cross multiply
    279,804.56x = 386,119.05 × 152,477.42
  4. Step 4: Simplify right side
    279,804.56x = 58,874,436,556.85
  5. Step 5: Solve for x
    x = 58,874,436,556.85/279,804.56
  6. Step 6: Final answer
    x = 210,412.71

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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.