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Finding the Fourth Proportional to 388,037,662.40, 582,481,646.40 and 242,635,404.80

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Solution

The fourth proportional to 388,037,662.40, 582,481,646.40 and 242,635,404.80 is: 364,218,950.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,037,662.40 : 582,481,646.40 = 242,635,404.80 : x
  2. Step 2: Convert to fraction form
    388,037,662.40/582,481,646.40 = 242,635,404.80/x
  3. Step 3: Cross multiply
    388,037,662.40x = 582,481,646.40 × 242,635,404.80
  4. Step 4: Simplify right side
    388,037,662.40x = 141,330,670,062,834,464
  5. Step 5: Solve for x
    x = 141,330,670,062,834,464/388,037,662.40
  6. Step 6: Final answer
    x = 364,218,950.27

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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.