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Finding the Fourth Proportional to 321,415.01, 443,522.87 and 178,162.86

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Solution

The fourth proportional to 321,415.01, 443,522.87 and 178,162.86 is: 245,848.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,415.01 : 443,522.87 = 178,162.86 : x
  2. Step 2: Convert to fraction form
    321,415.01/443,522.87 = 178,162.86/x
  3. Step 3: Cross multiply
    321,415.01x = 443,522.87 × 178,162.86
  4. Step 4: Simplify right side
    321,415.01x = 79,019,302,103.79
  5. Step 5: Solve for x
    x = 79,019,302,103.79/321,415.01
  6. Step 6: Final answer
    x = 245,848.21

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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.