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Finding the Fourth Proportional to 318,234.67, 439,147.51 and 174,991.03

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Solution

The fourth proportional to 318,234.67, 439,147.51 and 174,991.03 is: 241,478.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,234.67 : 439,147.51 = 174,991.03 : x
  2. Step 2: Convert to fraction form
    318,234.67/439,147.51 = 174,991.03/x
  3. Step 3: Cross multiply
    318,234.67x = 439,147.51 × 174,991.03
  4. Step 4: Simplify right side
    318,234.67x = 76,846,875,096.84
  5. Step 5: Solve for x
    x = 76,846,875,096.84/318,234.67
  6. Step 6: Final answer
    x = 241,478.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.