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Finding the Fourth Proportional to 425,830.16, 638,636.22 and 126,240.68

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Solution

The fourth proportional to 425,830.16, 638,636.22 and 126,240.68 is: 189,328.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,830.16 : 638,636.22 = 126,240.68 : x
  2. Step 2: Convert to fraction form
    425,830.16/638,636.22 = 126,240.68/x
  3. Step 3: Cross multiply
    425,830.16x = 638,636.22 × 126,240.68
  4. Step 4: Simplify right side
    425,830.16x = 80,621,870,685.43
  5. Step 5: Solve for x
    x = 80,621,870,685.43/425,830.16
  6. Step 6: Final answer
    x = 189,328.70

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