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Finding the Fourth Proportional to 220,037.94, 330,056.88 and 120,143.64

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Solution

The fourth proportional to 220,037.94, 330,056.88 and 120,143.64 is: 180,215.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,037.94 : 330,056.88 = 120,143.64 : x
  2. Step 2: Convert to fraction form
    220,037.94/330,056.88 = 120,143.64/x
  3. Step 3: Cross multiply
    220,037.94x = 330,056.88 × 120,143.64
  4. Step 4: Simplify right side
    220,037.94x = 39,654,234,970.24
  5. Step 5: Solve for x
    x = 39,654,234,970.24/220,037.94
  6. Step 6: Final answer
    x = 180,215.44

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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.