Home / 351,720.56-485,447.64-323,381.36

Finding the Fourth Proportional to 351,720.56, 485,447.64 and 323,381.36

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Solution

The fourth proportional to 351,720.56, 485,447.64 and 323,381.36 is: 446,333.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,720.56 : 485,447.64 = 323,381.36 : x
  2. Step 2: Convert to fraction form
    351,720.56/485,447.64 = 323,381.36/x
  3. Step 3: Cross multiply
    351,720.56x = 485,447.64 × 323,381.36
  4. Step 4: Simplify right side
    351,720.56x = 156,984,718,031.99
  5. Step 5: Solve for x
    x = 156,984,718,031.99/351,720.56
  6. Step 6: Final answer
    x = 446,333.64

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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.