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Finding the Fourth Proportional to 186,679.60, 280,710.60 and 156,266.80

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Solution

The fourth proportional to 186,679.60, 280,710.60 and 156,266.80 is: 234,978.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,679.60 : 280,710.60 = 156,266.80 : x
  2. Step 2: Convert to fraction form
    186,679.60/280,710.60 = 156,266.80/x
  3. Step 3: Cross multiply
    186,679.60x = 280,710.60 × 156,266.80
  4. Step 4: Simplify right side
    186,679.60x = 43,865,747,188.08
  5. Step 5: Solve for x
    x = 43,865,747,188.08/186,679.60
  6. Step 6: Final answer
    x = 234,978.79

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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.