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Finding the Fourth Proportional to 664,213.40, 996,320.10 and 264,915.80

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Solution

The fourth proportional to 664,213.40, 996,320.10 and 264,915.80 is: 397,373.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,213.40 : 996,320.10 = 264,915.80 : x
  2. Step 2: Convert to fraction form
    664,213.40/996,320.10 = 264,915.80/x
  3. Step 3: Cross multiply
    664,213.40x = 996,320.10 × 264,915.80
  4. Step 4: Simplify right side
    664,213.40x = 263,940,936,347.58
  5. Step 5: Solve for x
    x = 263,940,936,347.58/664,213.40
  6. Step 6: Final answer
    x = 397,373.70

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Similar ratio
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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.