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Finding the Fourth Proportional to 220,190.40, 330,285.60 and 164,421.90

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Solution

The fourth proportional to 220,190.40, 330,285.60 and 164,421.90 is: 246,632.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,190.40 : 330,285.60 = 164,421.90 : x
  2. Step 2: Convert to fraction form
    220,190.40/330,285.60 = 164,421.90/x
  3. Step 3: Cross multiply
    220,190.40x = 330,285.60 × 164,421.90
  4. Step 4: Simplify right side
    220,190.40x = 54,306,185,894.64
  5. Step 5: Solve for x
    x = 54,306,185,894.64/220,190.40
  6. Step 6: Final answer
    x = 246,632.85

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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.