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Finding the Fourth Proportional to 318,064.55, 438,930.02 and 174,839.27

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Solution

The fourth proportional to 318,064.55, 438,930.02 and 174,839.27 is: 241,278.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,064.55 : 438,930.02 = 174,839.27 : x
  2. Step 2: Convert to fraction form
    318,064.55/438,930.02 = 174,839.27/x
  3. Step 3: Cross multiply
    318,064.55x = 438,930.02 × 174,839.27
  4. Step 4: Simplify right side
    318,064.55x = 76,742,202,520.33
  5. Step 5: Solve for x
    x = 76,742,202,520.33/318,064.55
  6. Step 6: Final answer
    x = 241,278.71

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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.