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Finding the Fourth Proportional to 190,871.20, 286,306.80 and 179,984.80

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Solution

The fourth proportional to 190,871.20, 286,306.80 and 179,984.80 is: 269,977.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,871.20 : 286,306.80 = 179,984.80 : x
  2. Step 2: Convert to fraction form
    190,871.20/286,306.80 = 179,984.80/x
  3. Step 3: Cross multiply
    190,871.20x = 286,306.80 × 179,984.80
  4. Step 4: Simplify right side
    190,871.20x = 51,530,872,136.64
  5. Step 5: Solve for x
    x = 51,530,872,136.64/190,871.20
  6. Step 6: Final answer
    x = 269,977.20

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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.