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Finding the Fourth Proportional to 190,630.60, 285,945.90 and 72,262.60

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Solution

The fourth proportional to 190,630.60, 285,945.90 and 72,262.60 is: 108,393.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,630.60 : 285,945.90 = 72,262.60 : x
  2. Step 2: Convert to fraction form
    190,630.60/285,945.90 = 72,262.60/x
  3. Step 3: Cross multiply
    190,630.60x = 285,945.90 × 72,262.60
  4. Step 4: Simplify right side
    190,630.60x = 20,663,194,193.34
  5. Step 5: Solve for x
    x = 20,663,194,193.34/190,630.60
  6. Step 6: Final answer
    x = 108,393.90

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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.