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Finding the Fourth Proportional to 339,426.40, 509,139.60 and 331,650.40

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Solution

The fourth proportional to 339,426.40, 509,139.60 and 331,650.40 is: 497,475.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,426.40 : 509,139.60 = 331,650.40 : x
  2. Step 2: Convert to fraction form
    339,426.40/509,139.60 = 331,650.40/x
  3. Step 3: Cross multiply
    339,426.40x = 509,139.60 × 331,650.40
  4. Step 4: Simplify right side
    339,426.40x = 168,856,351,995.84
  5. Step 5: Solve for x
    x = 168,856,351,995.84/339,426.40
  6. Step 6: Final answer
    x = 497,475.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.