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Finding the Fourth Proportional to 603,842.21, 905,762.74 and 154,562.36

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Solution

The fourth proportional to 603,842.21, 905,762.74 and 154,562.36 is: 231,843.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,842.21 : 905,762.74 = 154,562.36 : x
  2. Step 2: Convert to fraction form
    603,842.21/905,762.74 = 154,562.36/x
  3. Step 3: Cross multiply
    603,842.21x = 905,762.74 × 154,562.36
  4. Step 4: Simplify right side
    603,842.21x = 139,996,825,175.86
  5. Step 5: Solve for x
    x = 139,996,825,175.86/603,842.21
  6. Step 6: Final answer
    x = 231,843.39

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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.