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Finding the Fourth Proportional to 321,524.89, 443,613.86 and 253,330.45

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Solution

The fourth proportional to 321,524.89, 443,613.86 and 253,330.45 is: 349,524.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,524.89 : 443,613.86 = 253,330.45 : x
  2. Step 2: Convert to fraction form
    321,524.89/443,613.86 = 253,330.45/x
  3. Step 3: Cross multiply
    321,524.89x = 443,613.86 × 253,330.45
  4. Step 4: Simplify right side
    321,524.89x = 112,380,897,513.39
  5. Step 5: Solve for x
    x = 112,380,897,513.39/321,524.89
  6. Step 6: Final answer
    x = 349,524.72

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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.