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Finding the Fourth Proportional to 310,289.24, 465,424.60 and 85,663.39

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Solution

The fourth proportional to 310,289.24, 465,424.60 and 85,663.39 is: 128,492.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,289.24 : 465,424.60 = 85,663.39 : x
  2. Step 2: Convert to fraction form
    310,289.24/465,424.60 = 85,663.39/x
  3. Step 3: Cross multiply
    310,289.24x = 465,424.60 × 85,663.39
  4. Step 4: Simplify right side
    310,289.24x = 39,869,847,647.67
  5. Step 5: Solve for x
    x = 39,869,847,647.67/310,289.24
  6. Step 6: Final answer
    x = 128,492.52

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