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Finding the Fourth Proportional to 220,133.40, 330,200.10 and 200,450.40

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Solution

The fourth proportional to 220,133.40, 330,200.10 and 200,450.40 is: 300,675.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,133.40 : 330,200.10 = 200,450.40 : x
  2. Step 2: Convert to fraction form
    220,133.40/330,200.10 = 200,450.40/x
  3. Step 3: Cross multiply
    220,133.40x = 330,200.10 × 200,450.40
  4. Step 4: Simplify right side
    220,133.40x = 66,188,742,125.04
  5. Step 5: Solve for x
    x = 66,188,742,125.04/220,133.40
  6. Step 6: Final answer
    x = 300,675.60

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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.