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Finding the Fourth Proportional to 338,890.64, 508,337.88 and 89,570

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Solution

The fourth proportional to 338,890.64, 508,337.88 and 89,570 is: 134,355.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,890.64 : 508,337.88 = 89,570 : x
  2. Step 2: Convert to fraction form
    338,890.64/508,337.88 = 89,570/x
  3. Step 3: Cross multiply
    338,890.64x = 508,337.88 × 89,570
  4. Step 4: Simplify right side
    338,890.64x = 45,531,823,911.60
  5. Step 5: Solve for x
    x = 45,531,823,911.60/338,890.64
  6. Step 6: Final answer
    x = 134,355.51

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