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Finding the Fourth Proportional to 220,228.20, 330,415.20 and 70,491.60

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Solution

The fourth proportional to 220,228.20, 330,415.20 and 70,491.60 is: 105,760.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,228.20 : 330,415.20 = 70,491.60 : x
  2. Step 2: Convert to fraction form
    220,228.20/330,415.20 = 70,491.60/x
  3. Step 3: Cross multiply
    220,228.20x = 330,415.20 × 70,491.60
  4. Step 4: Simplify right side
    220,228.20x = 23,291,496,112.32
  5. Step 5: Solve for x
    x = 23,291,496,112.32/220,228.20
  6. Step 6: Final answer
    x = 105,760.73

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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.