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Finding the Fourth Proportional to 321,130.31, 443,186.84 and 177,903.68

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Solution

The fourth proportional to 321,130.31, 443,186.84 and 177,903.68 is: 245,522.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,130.31 : 443,186.84 = 177,903.68 : x
  2. Step 2: Convert to fraction form
    321,130.31/443,186.84 = 177,903.68/x
  3. Step 3: Cross multiply
    321,130.31x = 443,186.84 × 177,903.68
  4. Step 4: Simplify right side
    321,130.31x = 78,844,566,658.12
  5. Step 5: Solve for x
    x = 78,844,566,658.12/321,130.31
  6. Step 6: Final answer
    x = 245,522.04

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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.