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Finding the Fourth Proportional to 323,403.83, 443,064.85 and 311,282.84

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Solution

The fourth proportional to 323,403.83, 443,064.85 and 311,282.84 is: 426,459.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,403.83 : 443,064.85 = 311,282.84 : x
  2. Step 2: Convert to fraction form
    323,403.83/443,064.85 = 311,282.84/x
  3. Step 3: Cross multiply
    323,403.83x = 443,064.85 × 311,282.84
  4. Step 4: Simplify right side
    323,403.83x = 137,918,482,649.39
  5. Step 5: Solve for x
    x = 137,918,482,649.39/323,403.83
  6. Step 6: Final answer
    x = 426,459.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.