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Finding the Fourth Proportional to 405,742.40, 608,095.20 and 294,804.80

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Solution

The fourth proportional to 405,742.40, 608,095.20 and 294,804.80 is: 441,830.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,742.40 : 608,095.20 = 294,804.80 : x
  2. Step 2: Convert to fraction form
    405,742.40/608,095.20 = 294,804.80/x
  3. Step 3: Cross multiply
    405,742.40x = 608,095.20 × 294,804.80
  4. Step 4: Simplify right side
    405,742.40x = 179,269,383,816.96
  5. Step 5: Solve for x
    x = 179,269,383,816.96/405,742.40
  6. Step 6: Final answer
    x = 441,830.54

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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.