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Finding the Fourth Proportional to 389,115, 536,978.70 and 210,267

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Solution

The fourth proportional to 389,115, 536,978.70 and 210,267 is: 290,168.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,115 : 536,978.70 = 210,267 : x
  2. Step 2: Convert to fraction form
    389,115/536,978.70 = 210,267/x
  3. Step 3: Cross multiply
    389,115x = 536,978.70 × 210,267
  4. Step 4: Simplify right side
    389,115x = 112,908,900,312.90
  5. Step 5: Solve for x
    x = 112,908,900,312.90/389,115
  6. Step 6: Final answer
    x = 290,168.46

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