Home / 318,090.82-438,819.03-281,829.25

Finding the Fourth Proportional to 318,090.82, 438,819.03 and 281,829.25

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Solution

The fourth proportional to 318,090.82, 438,819.03 and 281,829.25 is: 388,794.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,090.82 : 438,819.03 = 281,829.25 : x
  2. Step 2: Convert to fraction form
    318,090.82/438,819.03 = 281,829.25/x
  3. Step 3: Cross multiply
    318,090.82x = 438,819.03 × 281,829.25
  4. Step 4: Simplify right side
    318,090.82x = 123,672,038,110.63
  5. Step 5: Solve for x
    x = 123,672,038,110.63/318,090.82
  6. Step 6: Final answer
    x = 388,794.74

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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.