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Finding the Fourth Proportional to 392,979.60, 589,323.60 and 156,273.30

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Solution

The fourth proportional to 392,979.60, 589,323.60 and 156,273.30 is: 234,351.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,979.60 : 589,323.60 = 156,273.30 : x
  2. Step 2: Convert to fraction form
    392,979.60/589,323.60 = 156,273.30/x
  3. Step 3: Cross multiply
    392,979.60x = 589,323.60 × 156,273.30
  4. Step 4: Simplify right side
    392,979.60x = 92,095,543,739.88
  5. Step 5: Solve for x
    x = 92,095,543,739.88/392,979.60
  6. Step 6: Final answer
    x = 234,351.97

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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.