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Finding the Fourth Proportional to 603,719.06, 905,609.60 and 154,443.80

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Solution

The fourth proportional to 603,719.06, 905,609.60 and 154,443.80 is: 231,673.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,719.06 : 905,609.60 = 154,443.80 : x
  2. Step 2: Convert to fraction form
    603,719.06/905,609.60 = 154,443.80/x
  3. Step 3: Cross multiply
    603,719.06x = 905,609.60 × 154,443.80
  4. Step 4: Simplify right side
    603,719.06x = 139,865,787,940.48
  5. Step 5: Solve for x
    x = 139,865,787,940.48/603,719.06
  6. Step 6: Final answer
    x = 231,673.63

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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.