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Finding the Fourth Proportional to 220,576.40, 330,864.60 and 211,245.20

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Solution

The fourth proportional to 220,576.40, 330,864.60 and 211,245.20 is: 316,867.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,576.40 : 330,864.60 = 211,245.20 : x
  2. Step 2: Convert to fraction form
    220,576.40/330,864.60 = 211,245.20/x
  3. Step 3: Cross multiply
    220,576.40x = 330,864.60 × 211,245.20
  4. Step 4: Simplify right side
    220,576.40x = 69,893,558,599.92
  5. Step 5: Solve for x
    x = 69,893,558,599.92/220,576.40
  6. Step 6: Final answer
    x = 316,867.80

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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.