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Finding the Fourth Proportional to 190,321.30, 285,591.30 and 72,004.60

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Solution

The fourth proportional to 190,321.30, 285,591.30 and 72,004.60 is: 108,048.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,321.30 : 285,591.30 = 72,004.60 : x
  2. Step 2: Convert to fraction form
    190,321.30/285,591.30 = 72,004.60/x
  3. Step 3: Cross multiply
    190,321.30x = 285,591.30 × 72,004.60
  4. Step 4: Simplify right side
    190,321.30x = 20,563,887,319.98
  5. Step 5: Solve for x
    x = 20,563,887,319.98/190,321.30
  6. Step 6: Final answer
    x = 108,048.27

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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.