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Finding the Fourth Proportional to 388,089.20, 582,133.80 and 341,433.20

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Solution

The fourth proportional to 388,089.20, 582,133.80 and 341,433.20 is: 512,149.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,089.20 : 582,133.80 = 341,433.20 : x
  2. Step 2: Convert to fraction form
    388,089.20/582,133.80 = 341,433.20/x
  3. Step 3: Cross multiply
    388,089.20x = 582,133.80 × 341,433.20
  4. Step 4: Simplify right side
    388,089.20x = 198,759,806,162.16
  5. Step 5: Solve for x
    x = 198,759,806,162.16/388,089.20
  6. Step 6: Final answer
    x = 512,149.80

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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.