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Finding the Fourth Proportional to 216,855.40, 324,845.70 and 123,251.80

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Solution

The fourth proportional to 216,855.40, 324,845.70 and 123,251.80 is: 184,629.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,855.40 : 324,845.70 = 123,251.80 : x
  2. Step 2: Convert to fraction form
    216,855.40/324,845.70 = 123,251.80/x
  3. Step 3: Cross multiply
    216,855.40x = 324,845.70 × 123,251.80
  4. Step 4: Simplify right side
    216,855.40x = 40,037,817,247.26
  5. Step 5: Solve for x
    x = 40,037,817,247.26/216,855.40
  6. Step 6: Final answer
    x = 184,629.10

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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.