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Finding the Fourth Proportional to 218,075.30, 326,919.09 and 84,924.80

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Solution

The fourth proportional to 218,075.30, 326,919.09 and 84,924.80 is: 127,311.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,075.30 : 326,919.09 = 84,924.80 : x
  2. Step 2: Convert to fraction form
    218,075.30/326,919.09 = 84,924.80/x
  3. Step 3: Cross multiply
    218,075.30x = 326,919.09 × 84,924.80
  4. Step 4: Simplify right side
    218,075.30x = 27,763,538,334.43
  5. Step 5: Solve for x
    x = 27,763,538,334.43/218,075.30
  6. Step 6: Final answer
    x = 127,311.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.