Home / 388,558,109.86-582,773,323.52-139,511,811.80

Finding the Fourth Proportional to 388,558,109.86, 582,773,323.52 and 139,511,811.80

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Solution

The fourth proportional to 388,558,109.86, 582,773,323.52 and 139,511,811.80 is: 209,244,795.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,558,109.86 : 582,773,323.52 = 139,511,811.80 : x
  2. Step 2: Convert to fraction form
    388,558,109.86/582,773,323.52 = 139,511,811.80/x
  3. Step 3: Cross multiply
    388,558,109.86x = 582,773,323.52 × 139,511,811.80
  4. Step 4: Simplify right side
    388,558,109.86x = 81,303,762,232,982,752
  5. Step 5: Solve for x
    x = 81,303,762,232,982,752/388,558,109.86
  6. Step 6: Final answer
    x = 209,244,795.49

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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.