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Finding the Fourth Proportional to 279,269, 385,362.06 and 158,371.64

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Solution

The fourth proportional to 279,269, 385,362.06 and 158,371.64 is: 218,536.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,269 : 385,362.06 = 158,371.64 : x
  2. Step 2: Convert to fraction form
    279,269/385,362.06 = 158,371.64/x
  3. Step 3: Cross multiply
    279,269x = 385,362.06 × 158,371.64
  4. Step 4: Simplify right side
    279,269x = 61,030,421,435.98
  5. Step 5: Solve for x
    x = 61,030,421,435.98/279,269
  6. Step 6: Final answer
    x = 218,536.33

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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.