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Finding the Fourth Proportional to 279,265, 385,356.52 and 158,367.64

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Solution

The fourth proportional to 279,265, 385,356.52 and 158,367.64 is: 218,530.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,265 : 385,356.52 = 158,367.64 : x
  2. Step 2: Convert to fraction form
    279,265/385,356.52 = 158,367.64/x
  3. Step 3: Cross multiply
    279,265x = 385,356.52 × 158,367.64
  4. Step 4: Simplify right side
    279,265x = 61,028,002,631.01
  5. Step 5: Solve for x
    x = 61,028,002,631.01/279,265
  6. Step 6: Final answer
    x = 218,530.80

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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.