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Finding the Fourth Proportional to 603,761.12, 905,672.64 and 154,485.80

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Solution

The fourth proportional to 603,761.12, 905,672.64 and 154,485.80 is: 231,736.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,761.12 : 905,672.64 = 154,485.80 : x
  2. Step 2: Convert to fraction form
    603,761.12/905,672.64 = 154,485.80/x
  3. Step 3: Cross multiply
    603,761.12x = 905,672.64 × 154,485.80
  4. Step 4: Simplify right side
    603,761.12x = 139,913,562,328.51
  5. Step 5: Solve for x
    x = 139,913,562,328.51/603,761.12
  6. Step 6: Final answer
    x = 231,736.62

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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.