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Finding the Fourth Proportional to 321,418.08, 443,527.09 and 178,165.93

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Solution

The fourth proportional to 321,418.08, 443,527.09 and 178,165.93 is: 245,852.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,418.08 : 443,527.09 = 178,165.93 : x
  2. Step 2: Convert to fraction form
    321,418.08/443,527.09 = 178,165.93/x
  3. Step 3: Cross multiply
    321,418.08x = 443,527.09 × 178,165.93
  4. Step 4: Simplify right side
    321,418.08x = 79,021,416,470.04
  5. Step 5: Solve for x
    x = 79,021,416,470.04/321,418.08
  6. Step 6: Final answer
    x = 245,852.43

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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.