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Finding the Fourth Proportional to 255,260.47, 382,936.30 and 86,771.94

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Solution

The fourth proportional to 255,260.47, 382,936.30 and 86,771.94 is: 130,173.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,260.47 : 382,936.30 = 86,771.94 : x
  2. Step 2: Convert to fraction form
    255,260.47/382,936.30 = 86,771.94/x
  3. Step 3: Cross multiply
    255,260.47x = 382,936.30 × 86,771.94
  4. Step 4: Simplify right side
    255,260.47x = 33,228,125,647.42
  5. Step 5: Solve for x
    x = 33,228,125,647.42/255,260.47
  6. Step 6: Final answer
    x = 130,173.41

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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.