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Finding the Fourth Proportional to 399,940.34, 599,911.11 and 160,162.21

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Solution

The fourth proportional to 399,940.34, 599,911.11 and 160,162.21 is: 240,243.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,940.34 : 599,911.11 = 160,162.21 : x
  2. Step 2: Convert to fraction form
    399,940.34/599,911.11 = 160,162.21/x
  3. Step 3: Cross multiply
    399,940.34x = 599,911.11 × 160,162.21
  4. Step 4: Simplify right side
    399,940.34x = 96,083,089,931.04
  5. Step 5: Solve for x
    x = 96,083,089,931.04/399,940.34
  6. Step 6: Final answer
    x = 240,243.56

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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.