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Finding the Fourth Proportional to 392,992.07, 589,602.92 and 126,746.69

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Solution

The fourth proportional to 392,992.07, 589,602.92 and 126,746.69 is: 190,157.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,992.07 : 589,602.92 = 126,746.69 : x
  2. Step 2: Convert to fraction form
    392,992.07/589,602.92 = 126,746.69/x
  3. Step 3: Cross multiply
    392,992.07x = 589,602.92 × 126,746.69
  4. Step 4: Simplify right side
    392,992.07x = 74,730,214,942.59
  5. Step 5: Solve for x
    x = 74,730,214,942.59/392,992.07
  6. Step 6: Final answer
    x = 190,157.06

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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.