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Finding the Fourth Proportional to 383,749.68, 529,578 and 211,674.30

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Solution

The fourth proportional to 383,749.68, 529,578 and 211,674.30 is: 292,112.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,749.68 : 529,578 = 211,674.30 : x
  2. Step 2: Convert to fraction form
    383,749.68/529,578 = 211,674.30/x
  3. Step 3: Cross multiply
    383,749.68x = 529,578 × 211,674.30
  4. Step 4: Simplify right side
    383,749.68x = 112,098,052,445.40
  5. Step 5: Solve for x
    x = 112,098,052,445.40/383,749.68
  6. Step 6: Final answer
    x = 292,112.43

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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.