Home / 388,530,208.80-582,720,663.60-115,909,869.60

Finding the Fourth Proportional to 388,530,208.80, 582,720,663.60 and 115,909,869.60

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Solution

The fourth proportional to 388,530,208.80, 582,720,663.60 and 115,909,869.60 is: 173,842,534.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,530,208.80 : 582,720,663.60 = 115,909,869.60 : x
  2. Step 2: Convert to fraction form
    388,530,208.80/582,720,663.60 = 115,909,869.60/x
  3. Step 3: Cross multiply
    388,530,208.80x = 582,720,663.60 × 115,909,869.60
  4. Step 4: Simplify right side
    388,530,208.80x = 67,543,076,131,101,464
  5. Step 5: Solve for x
    x = 67,543,076,131,101,464/388,530,208.80
  6. Step 6: Final answer
    x = 173,842,534.25

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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.