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Finding the Fourth Proportional to 262,984.40, 394,476.60 and 122,757.20

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Solution

The fourth proportional to 262,984.40, 394,476.60 and 122,757.20 is: 184,135.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,984.40 : 394,476.60 = 122,757.20 : x
  2. Step 2: Convert to fraction form
    262,984.40/394,476.60 = 122,757.20/x
  3. Step 3: Cross multiply
    262,984.40x = 394,476.60 × 122,757.20
  4. Step 4: Simplify right side
    262,984.40x = 48,424,842,881.52
  5. Step 5: Solve for x
    x = 48,424,842,881.52/262,984.40
  6. Step 6: Final answer
    x = 184,135.80

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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.