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Finding the Fourth Proportional to 321,635.16, 443,818.44 and 178,360.20

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Solution

The fourth proportional to 321,635.16, 443,818.44 and 178,360.20 is: 246,115.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,635.16 : 443,818.44 = 178,360.20 : x
  2. Step 2: Convert to fraction form
    321,635.16/443,818.44 = 178,360.20/x
  3. Step 3: Cross multiply
    321,635.16x = 443,818.44 × 178,360.20
  4. Step 4: Simplify right side
    321,635.16x = 79,159,545,722.09
  5. Step 5: Solve for x
    x = 79,159,545,722.09/321,635.16
  6. Step 6: Final answer
    x = 246,115.96

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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.