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Finding the Fourth Proportional to 389,328.99, 537,148.20 and 217,219.05

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Solution

The fourth proportional to 389,328.99, 537,148.20 and 217,219.05 is: 299,692.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,328.99 : 537,148.20 = 217,219.05 : x
  2. Step 2: Convert to fraction form
    389,328.99/537,148.20 = 217,219.05/x
  3. Step 3: Cross multiply
    389,328.99x = 537,148.20 × 217,219.05
  4. Step 4: Simplify right side
    389,328.99x = 116,678,821,713.21
  5. Step 5: Solve for x
    x = 116,678,821,713.21/389,328.99
  6. Step 6: Final answer
    x = 299,692.10

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