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Finding the Fourth Proportional to 313,601.40, 470,661.30 and 145,380.60

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Solution

The fourth proportional to 313,601.40, 470,661.30 and 145,380.60 is: 218,191.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,601.40 : 470,661.30 = 145,380.60 : x
  2. Step 2: Convert to fraction form
    313,601.40/470,661.30 = 145,380.60/x
  3. Step 3: Cross multiply
    313,601.40x = 470,661.30 × 145,380.60
  4. Step 4: Simplify right side
    313,601.40x = 68,425,022,190.78
  5. Step 5: Solve for x
    x = 68,425,022,190.78/313,601.40
  6. Step 6: Final answer
    x = 218,191.06

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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.