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Finding the Fourth Proportional to 255,210.81, 382,833.83 and 86,662.36

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Solution

The fourth proportional to 255,210.81, 382,833.83 and 86,662.36 is: 129,999.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,210.81 : 382,833.83 = 86,662.36 : x
  2. Step 2: Convert to fraction form
    255,210.81/382,833.83 = 86,662.36/x
  3. Step 3: Cross multiply
    255,210.81x = 382,833.83 × 86,662.36
  4. Step 4: Simplify right side
    255,210.81x = 33,177,283,195.64
  5. Step 5: Solve for x
    x = 33,177,283,195.64/255,210.81
  6. Step 6: Final answer
    x = 129,999.52

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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.