Home / 405,921.90-608,870.30-192,843.20

Finding the Fourth Proportional to 405,921.90, 608,870.30 and 192,843.20

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Solution

The fourth proportional to 405,921.90, 608,870.30 and 192,843.20 is: 289,258.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,921.90 : 608,870.30 = 192,843.20 : x
  2. Step 2: Convert to fraction form
    405,921.90/608,870.30 = 192,843.20/x
  3. Step 3: Cross multiply
    405,921.90x = 608,870.30 × 192,843.20
  4. Step 4: Simplify right side
    405,921.90x = 117,416,497,036.96
  5. Step 5: Solve for x
    x = 117,416,497,036.96/405,921.90
  6. Step 6: Final answer
    x = 289,258.84

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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.