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Finding the Fourth Proportional to 320,672.88, 481,004.28 and 110,312.64

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Solution

The fourth proportional to 320,672.88, 481,004.28 and 110,312.64 is: 165,467.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,672.88 : 481,004.28 = 110,312.64 : x
  2. Step 2: Convert to fraction form
    320,672.88/481,004.28 = 110,312.64/x
  3. Step 3: Cross multiply
    320,672.88x = 481,004.28 × 110,312.64
  4. Step 4: Simplify right side
    320,672.88x = 53,060,851,978.10
  5. Step 5: Solve for x
    x = 53,060,851,978.10/320,672.88
  6. Step 6: Final answer
    x = 165,467.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.