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Finding the Fourth Proportional to 279,190, 385,282.38 and 158,292.64

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Solution

The fourth proportional to 279,190, 385,282.38 and 158,292.64 is: 218,443.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,190 : 385,282.38 = 158,292.64 : x
  2. Step 2: Convert to fraction form
    279,190/385,282.38 = 158,292.64/x
  3. Step 3: Cross multiply
    279,190x = 385,282.38 × 158,292.64
  4. Step 4: Simplify right side
    279,190x = 60,987,365,075.68
  5. Step 5: Solve for x
    x = 60,987,365,075.68/279,190
  6. Step 6: Final answer
    x = 218,443.95

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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.