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Finding the Fourth Proportional to 186,842.40, 280,231.20 and 68,452.80

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Solution

The fourth proportional to 186,842.40, 280,231.20 and 68,452.80 is: 102,667.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,842.40 : 280,231.20 = 68,452.80 : x
  2. Step 2: Convert to fraction form
    186,842.40/280,231.20 = 68,452.80/x
  3. Step 3: Cross multiply
    186,842.40x = 280,231.20 × 68,452.80
  4. Step 4: Simplify right side
    186,842.40x = 19,182,610,287.36
  5. Step 5: Solve for x
    x = 19,182,610,287.36/186,842.40
  6. Step 6: Final answer
    x = 102,667.33

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1.5x scale

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.