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Finding the Fourth Proportional to 321,516.66, 443,671.34 and 178,271.40

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Solution

The fourth proportional to 321,516.66, 443,671.34 and 178,271.40 is: 246,002.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,516.66 : 443,671.34 = 178,271.40 : x
  2. Step 2: Convert to fraction form
    321,516.66/443,671.34 = 178,271.40/x
  3. Step 3: Cross multiply
    321,516.66x = 443,671.34 × 178,271.40
  4. Step 4: Simplify right side
    321,516.66x = 79,093,910,921.68
  5. Step 5: Solve for x
    x = 79,093,910,921.68/321,516.66
  6. Step 6: Final answer
    x = 246,002.53

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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.