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Finding the Fourth Proportional to 263,264.16, 394,895.92 and 85,770.96

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Solution

The fourth proportional to 263,264.16, 394,895.92 and 85,770.96 is: 128,656.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,264.16 : 394,895.92 = 85,770.96 : x
  2. Step 2: Convert to fraction form
    263,264.16/394,895.92 = 85,770.96/x
  3. Step 3: Cross multiply
    263,264.16x = 394,895.92 × 85,770.96
  4. Step 4: Simplify right side
    263,264.16x = 33,870,602,158.48
  5. Step 5: Solve for x
    x = 33,870,602,158.48/263,264.16
  6. Step 6: Final answer
    x = 128,656.34

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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.