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Finding the Fourth Proportional to 262,300.80, 394,228.80 and 228,086.40

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Solution

The fourth proportional to 262,300.80, 394,228.80 and 228,086.40 is: 342,805.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,300.80 : 394,228.80 = 228,086.40 : x
  2. Step 2: Convert to fraction form
    262,300.80/394,228.80 = 228,086.40/x
  3. Step 3: Cross multiply
    262,300.80x = 394,228.80 × 228,086.40
  4. Step 4: Simplify right side
    262,300.80x = 89,918,227,768.32
  5. Step 5: Solve for x
    x = 89,918,227,768.32/262,300.80
  6. Step 6: Final answer
    x = 342,805.77

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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.