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Finding the Fourth Proportional to 321,682.95, 443,886.66 and 178,407.09

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Solution

The fourth proportional to 321,682.95, 443,886.66 and 178,407.09 is: 246,181.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,682.95 : 443,886.66 = 178,407.09 : x
  2. Step 2: Convert to fraction form
    321,682.95/443,886.66 = 178,407.09/x
  3. Step 3: Cross multiply
    321,682.95x = 443,886.66 × 178,407.09
  4. Step 4: Simplify right side
    321,682.95x = 79,192,527,300.42
  5. Step 5: Solve for x
    x = 79,192,527,300.42/321,682.95
  6. Step 6: Final answer
    x = 246,181.92

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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.