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Finding the Fourth Proportional to 299,681,608.80, 449,018,528.40 and 248,285,359.20

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Solution

The fourth proportional to 299,681,608.80, 449,018,528.40 and 248,285,359.20 is: 372,010,571.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,681,608.80 : 449,018,528.40 = 248,285,359.20 : x
  2. Step 2: Convert to fraction form
    299,681,608.80/449,018,528.40 = 248,285,359.20/x
  3. Step 3: Cross multiply
    299,681,608.80x = 449,018,528.40 × 248,285,359.20
  4. Step 4: Simplify right side
    299,681,608.80x = 111,484,726,611,249,392
  5. Step 5: Solve for x
    x = 111,484,726,611,249,392/299,681,608.80
  6. Step 6: Final answer
    x = 372,010,571.68

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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.