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Finding the Fourth Proportional to 321,451.34, 443,484.32 and 192,392.82

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Solution

The fourth proportional to 321,451.34, 443,484.32 and 192,392.82 is: 265,431.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,451.34 : 443,484.32 = 192,392.82 : x
  2. Step 2: Convert to fraction form
    321,451.34/443,484.32 = 192,392.82/x
  3. Step 3: Cross multiply
    321,451.34x = 443,484.32 × 192,392.82
  4. Step 4: Simplify right side
    321,451.34x = 85,323,197,988.62
  5. Step 5: Solve for x
    x = 85,323,197,988.62/321,451.34
  6. Step 6: Final answer
    x = 265,431.15

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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.