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Finding the Fourth Proportional to 321,522.64, 443,700.48 and 178,279

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Solution

The fourth proportional to 321,522.64, 443,700.48 and 178,279 is: 246,024.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,522.64 : 443,700.48 = 178,279 : x
  2. Step 2: Convert to fraction form
    321,522.64/443,700.48 = 178,279/x
  3. Step 3: Cross multiply
    321,522.64x = 443,700.48 × 178,279
  4. Step 4: Simplify right side
    321,522.64x = 79,102,477,873.92
  5. Step 5: Solve for x
    x = 79,102,477,873.92/321,522.64
  6. Step 6: Final answer
    x = 246,024.60

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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.