Home / 320,968.63-443,398.09-256,353.03

Finding the Fourth Proportional to 320,968.63, 443,398.09 and 256,353.03

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Solution

The fourth proportional to 320,968.63, 443,398.09 and 256,353.03 is: 354,135.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,968.63 : 443,398.09 = 256,353.03 : x
  2. Step 2: Convert to fraction form
    320,968.63/443,398.09 = 256,353.03/x
  3. Step 3: Cross multiply
    320,968.63x = 443,398.09 × 256,353.03
  4. Step 4: Simplify right side
    320,968.63x = 113,666,446,331.56
  5. Step 5: Solve for x
    x = 113,666,446,331.56/320,968.63
  6. Step 6: Final answer
    x = 354,135.69

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1.5x scale

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.