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Finding the Fourth Proportional to 298,808.60, 419,381.80 and 298,808.60

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Solution

The fourth proportional to 298,808.60, 419,381.80 and 298,808.60 is: 419,381.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,808.60 : 419,381.80 = 298,808.60 : x
  2. Step 2: Convert to fraction form
    298,808.60/419,381.80 = 298,808.60/x
  3. Step 3: Cross multiply
    298,808.60x = 419,381.80 × 298,808.60
  4. Step 4: Simplify right side
    298,808.60x = 125,314,888,523.48
  5. Step 5: Solve for x
    x = 125,314,888,523.48/298,808.60
  6. Step 6: Final answer
    x = 419,381.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.