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Finding the Fourth Proportional to 397,105.20, 595,657.80 and 355,114.80

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Solution

The fourth proportional to 397,105.20, 595,657.80 and 355,114.80 is: 532,672.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,105.20 : 595,657.80 = 355,114.80 : x
  2. Step 2: Convert to fraction form
    397,105.20/595,657.80 = 355,114.80/x
  3. Step 3: Cross multiply
    397,105.20x = 595,657.80 × 355,114.80
  4. Step 4: Simplify right side
    397,105.20x = 211,526,900,515.44
  5. Step 5: Solve for x
    x = 211,526,900,515.44/397,105.20
  6. Step 6: Final answer
    x = 532,672.20

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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.