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Finding the Fourth Proportional to 299,512, 413,279.58 and 172,163.80

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Solution

The fourth proportional to 299,512, 413,279.58 and 172,163.80 is: 237,559.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,512 : 413,279.58 = 172,163.80 : x
  2. Step 2: Convert to fraction form
    299,512/413,279.58 = 172,163.80/x
  3. Step 3: Cross multiply
    299,512x = 413,279.58 × 172,163.80
  4. Step 4: Simplify right side
    299,512x = 71,151,782,955.20
  5. Step 5: Solve for x
    x = 71,151,782,955.20/299,512
  6. Step 6: Final answer
    x = 237,559.04

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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.