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Finding the Fourth Proportional to 239,852.94, 359,385.72 and 81,995.28

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Solution

The fourth proportional to 239,852.94, 359,385.72 and 81,995.28 is: 122,858.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,852.94 : 359,385.72 = 81,995.28 : x
  2. Step 2: Convert to fraction form
    239,852.94/359,385.72 = 81,995.28/x
  3. Step 3: Cross multiply
    239,852.94x = 359,385.72 × 81,995.28
  4. Step 4: Simplify right side
    239,852.94x = 29,467,932,739.40
  5. Step 5: Solve for x
    x = 29,467,932,739.40/239,852.94
  6. Step 6: Final answer
    x = 122,858.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.