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Finding the Fourth Proportional to 262,875.80, 394,313.70 and 122,907.80

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Solution

The fourth proportional to 262,875.80, 394,313.70 and 122,907.80 is: 184,361.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,875.80 : 394,313.70 = 122,907.80 : x
  2. Step 2: Convert to fraction form
    262,875.80/394,313.70 = 122,907.80/x
  3. Step 3: Cross multiply
    262,875.80x = 394,313.70 × 122,907.80
  4. Step 4: Simplify right side
    262,875.80x = 48,464,229,376.86
  5. Step 5: Solve for x
    x = 48,464,229,376.86/262,875.80
  6. Step 6: Final answer
    x = 184,361.70

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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.