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Finding the Fourth Proportional to 299,681,208.80, 449,017,928.40 and 248,284,959.20

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Solution

The fourth proportional to 299,681,208.80, 449,017,928.40 and 248,284,959.20 is: 372,009,971.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,681,208.80 : 449,017,928.40 = 248,284,959.20 : x
  2. Step 2: Convert to fraction form
    299,681,208.80/449,017,928.40 = 248,284,959.20/x
  3. Step 3: Cross multiply
    299,681,208.80x = 449,017,928.40 × 248,284,959.20
  4. Step 4: Simplify right side
    299,681,208.80x = 111,484,398,032,862,512
  5. Step 5: Solve for x
    x = 111,484,398,032,862,512/299,681,208.80
  6. Step 6: Final answer
    x = 372,009,971.79

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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.