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Finding the Fourth Proportional to 210,978,485.60, 316,523,715.60 and 74,649,653.60

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Solution

The fourth proportional to 210,978,485.60, 316,523,715.60 and 74,649,653.60 is: 111,994,290.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,978,485.60 : 316,523,715.60 = 74,649,653.60 : x
  2. Step 2: Convert to fraction form
    210,978,485.60/316,523,715.60 = 74,649,653.60/x
  3. Step 3: Cross multiply
    210,978,485.60x = 316,523,715.60 × 74,649,653.60
  4. Step 4: Simplify right side
    210,978,485.60x = 23,628,385,725,724,916
  5. Step 5: Solve for x
    x = 23,628,385,725,724,916/210,978,485.60
  6. Step 6: Final answer
    x = 111,994,290.12

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