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Finding the Fourth Proportional to 208,328.40, 312,492.60 and 83,758.80

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Solution

The fourth proportional to 208,328.40, 312,492.60 and 83,758.80 is: 125,638.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,328.40 : 312,492.60 = 83,758.80 : x
  2. Step 2: Convert to fraction form
    208,328.40/312,492.60 = 83,758.80/x
  3. Step 3: Cross multiply
    208,328.40x = 312,492.60 × 83,758.80
  4. Step 4: Simplify right side
    208,328.40x = 26,174,005,184.88
  5. Step 5: Solve for x
    x = 26,174,005,184.88/208,328.40
  6. Step 6: Final answer
    x = 125,638.20

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