Home / 258,800,812.80-388,201,219.20-137,868,460.80

Finding the Fourth Proportional to 258,800,812.80, 388,201,219.20 and 137,868,460.80

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Solution

The fourth proportional to 258,800,812.80, 388,201,219.20 and 137,868,460.80 is: 206,802,691.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,800,812.80 : 388,201,219.20 = 137,868,460.80 : x
  2. Step 2: Convert to fraction form
    258,800,812.80/388,201,219.20 = 137,868,460.80/x
  3. Step 3: Cross multiply
    258,800,812.80x = 388,201,219.20 × 137,868,460.80
  4. Step 4: Simplify right side
    258,800,812.80x = 53,520,704,571,787,408
  5. Step 5: Solve for x
    x = 53,520,704,571,787,408/258,800,812.80
  6. Step 6: Final answer
    x = 206,802,691.20

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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.