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Finding the Fourth Proportional to 279,943,302.80, 419,914,954.20 and 88,467,078.80

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Solution

The fourth proportional to 279,943,302.80, 419,914,954.20 and 88,467,078.80 is: 132,700,618.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,943,302.80 : 419,914,954.20 = 88,467,078.80 : x
  2. Step 2: Convert to fraction form
    279,943,302.80/419,914,954.20 = 88,467,078.80/x
  3. Step 3: Cross multiply
    279,943,302.80x = 419,914,954.20 × 88,467,078.80
  4. Step 4: Simplify right side
    279,943,302.80x = 37,148,649,342,509,792
  5. Step 5: Solve for x
    x = 37,148,649,342,509,792/279,943,302.80
  6. Step 6: Final answer
    x = 132,700,618.20

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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.