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Finding the Fourth Proportional to 405,902.40, 608,853.60 and 248,049.60

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Solution

The fourth proportional to 405,902.40, 608,853.60 and 248,049.60 is: 372,074.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,902.40 : 608,853.60 = 248,049.60 : x
  2. Step 2: Convert to fraction form
    405,902.40/608,853.60 = 248,049.60/x
  3. Step 3: Cross multiply
    405,902.40x = 608,853.60 × 248,049.60
  4. Step 4: Simplify right side
    405,902.40x = 151,025,891,938.56
  5. Step 5: Solve for x
    x = 151,025,891,938.56/405,902.40
  6. Step 6: Final answer
    x = 372,074.40

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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.