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Finding the Fourth Proportional to 279,696.36, 385,983.62 and 158,840.16

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Solution

The fourth proportional to 279,696.36, 385,983.62 and 158,840.16 is: 219,200.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,696.36 : 385,983.62 = 158,840.16 : x
  2. Step 2: Convert to fraction form
    279,696.36/385,983.62 = 158,840.16/x
  3. Step 3: Cross multiply
    279,696.36x = 385,983.62 × 158,840.16
  4. Step 4: Simplify right side
    279,696.36x = 61,309,699,958.18
  5. Step 5: Solve for x
    x = 61,309,699,958.18/279,696.36
  6. Step 6: Final answer
    x = 219,200.92

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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.