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Finding the Fourth Proportional to 388,277.80, 582,416.70 and 308,962.60

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Solution

The fourth proportional to 388,277.80, 582,416.70 and 308,962.60 is: 463,443.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,277.80 : 582,416.70 = 308,962.60 : x
  2. Step 2: Convert to fraction form
    388,277.80/582,416.70 = 308,962.60/x
  3. Step 3: Cross multiply
    388,277.80x = 582,416.70 × 308,962.60
  4. Step 4: Simplify right side
    388,277.80x = 179,944,977,915.42
  5. Step 5: Solve for x
    x = 179,944,977,915.42/388,277.80
  6. Step 6: Final answer
    x = 463,443.90

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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.