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Finding the Fourth Proportional to 430,975.84, 646,064.64 and 220,148.80

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Solution

The fourth proportional to 430,975.84, 646,064.64 and 220,148.80 is: 330,019.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,975.84 : 646,064.64 = 220,148.80 : x
  2. Step 2: Convert to fraction form
    430,975.84/646,064.64 = 220,148.80/x
  3. Step 3: Cross multiply
    430,975.84x = 646,064.64 × 220,148.80
  4. Step 4: Simplify right side
    430,975.84x = 142,230,355,218.43
  5. Step 5: Solve for x
    x = 142,230,355,218.43/430,975.84
  6. Step 6: Final answer
    x = 330,019.32

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