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Finding the Fourth Proportional to 259,907.40, 389,666.70 and 141,712.20

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Solution

The fourth proportional to 259,907.40, 389,666.70 and 141,712.20 is: 212,462.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,907.40 : 389,666.70 = 141,712.20 : x
  2. Step 2: Convert to fraction form
    259,907.40/389,666.70 = 141,712.20/x
  3. Step 3: Cross multiply
    259,907.40x = 389,666.70 × 141,712.20
  4. Step 4: Simplify right side
    259,907.40x = 55,220,525,323.74
  5. Step 5: Solve for x
    x = 55,220,525,323.74/259,907.40
  6. Step 6: Final answer
    x = 212,462.31

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