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Finding the Fourth Proportional to 190,866.20, 286,299.30 and 179,979.80

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Solution

The fourth proportional to 190,866.20, 286,299.30 and 179,979.80 is: 269,969.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,866.20 : 286,299.30 = 179,979.80 : x
  2. Step 2: Convert to fraction form
    190,866.20/286,299.30 = 179,979.80/x
  3. Step 3: Cross multiply
    190,866.20x = 286,299.30 × 179,979.80
  4. Step 4: Simplify right side
    190,866.20x = 51,528,090,754.14
  5. Step 5: Solve for x
    x = 51,528,090,754.14/190,866.20
  6. Step 6: Final answer
    x = 269,969.70

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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.