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Finding the Fourth Proportional to 388,049.20, 582,073.80 and 341,393.20

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Solution

The fourth proportional to 388,049.20, 582,073.80 and 341,393.20 is: 512,089.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,049.20 : 582,073.80 = 341,393.20 : x
  2. Step 2: Convert to fraction form
    388,049.20/582,073.80 = 341,393.20/x
  3. Step 3: Cross multiply
    388,049.20x = 582,073.80 × 341,393.20
  4. Step 4: Simplify right side
    388,049.20x = 198,716,037,218.16
  5. Step 5: Solve for x
    x = 198,716,037,218.16/388,049.20
  6. Step 6: Final answer
    x = 512,089.80

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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.