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Finding the Fourth Proportional to 299,558,866.80, 449,338,300.20 and 247,602,745.20

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Solution

The fourth proportional to 299,558,866.80, 449,338,300.20 and 247,602,745.20 is: 371,404,117.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,558,866.80 : 449,338,300.20 = 247,602,745.20 : x
  2. Step 2: Convert to fraction form
    299,558,866.80/449,338,300.20 = 247,602,745.20/x
  3. Step 3: Cross multiply
    299,558,866.80x = 449,338,300.20 × 247,602,745.20
  4. Step 4: Simplify right side
    299,558,866.80x = 111,257,396,653,021,696
  5. Step 5: Solve for x
    x = 111,257,396,653,021,696/299,558,866.80
  6. Step 6: Final answer
    x = 371,404,117.80

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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.