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Finding the Fourth Proportional to 283,076.88, 424,638.36 and 80,688.46

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Solution

The fourth proportional to 283,076.88, 424,638.36 and 80,688.46 is: 121,039.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,076.88 : 424,638.36 = 80,688.46 : x
  2. Step 2: Convert to fraction form
    283,076.88/424,638.36 = 80,688.46/x
  3. Step 3: Cross multiply
    283,076.88x = 424,638.36 × 80,688.46
  4. Step 4: Simplify right side
    283,076.88x = 34,263,415,325.33
  5. Step 5: Solve for x
    x = 34,263,415,325.33/283,076.88
  6. Step 6: Final answer
    x = 121,039.26

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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.