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Finding the Fourth Proportional to 279,518.06, 385,850.84 and 211,554

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Solution

The fourth proportional to 279,518.06, 385,850.84 and 211,554 is: 292,032.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,518.06 : 385,850.84 = 211,554 : x
  2. Step 2: Convert to fraction form
    279,518.06/385,850.84 = 211,554/x
  3. Step 3: Cross multiply
    279,518.06x = 385,850.84 × 211,554
  4. Step 4: Simplify right side
    279,518.06x = 81,628,288,605.36
  5. Step 5: Solve for x
    x = 81,628,288,605.36/279,518.06
  6. Step 6: Final answer
    x = 292,032.25

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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.