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Finding the Fourth Proportional to 262,755.55, 394,133.05 and 85,262.55

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Solution

The fourth proportional to 262,755.55, 394,133.05 and 85,262.55 is: 127,893.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,755.55 : 394,133.05 = 85,262.55 : x
  2. Step 2: Convert to fraction form
    262,755.55/394,133.05 = 85,262.55/x
  3. Step 3: Cross multiply
    262,755.55x = 394,133.05 × 85,262.55
  4. Step 4: Simplify right side
    262,755.55x = 33,604,788,882.28
  5. Step 5: Solve for x
    x = 33,604,788,882.28/262,755.55
  6. Step 6: Final answer
    x = 127,893.74

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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.