Home / 412,033,136.80-618,049,705.20-139,403,903.80

Finding the Fourth Proportional to 412,033,136.80, 618,049,705.20 and 139,403,903.80

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Solution

The fourth proportional to 412,033,136.80, 618,049,705.20 and 139,403,903.80 is: 209,105,855.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,033,136.80 : 618,049,705.20 = 139,403,903.80 : x
  2. Step 2: Convert to fraction form
    412,033,136.80/618,049,705.20 = 139,403,903.80/x
  3. Step 3: Cross multiply
    412,033,136.80x = 618,049,705.20 × 139,403,903.80
  4. Step 4: Simplify right side
    412,033,136.80x = 86,158,541,647,319,168
  5. Step 5: Solve for x
    x = 86,158,541,647,319,168/412,033,136.80
  6. Step 6: Final answer
    x = 209,105,855.70

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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.