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Finding the Fourth Proportional to 481,285, 721,927.50 and 131,077

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Solution

The fourth proportional to 481,285, 721,927.50 and 131,077 is: 196,615.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,285 : 721,927.50 = 131,077 : x
  2. Step 2: Convert to fraction form
    481,285/721,927.50 = 131,077/x
  3. Step 3: Cross multiply
    481,285x = 721,927.50 × 131,077
  4. Step 4: Simplify right side
    481,285x = 94,628,090,917.50
  5. Step 5: Solve for x
    x = 94,628,090,917.50/481,285
  6. Step 6: Final answer
    x = 196,615.50

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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.