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Finding the Fourth Proportional to 485,106.40, 727,659.60 and 248,910.40

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Solution

The fourth proportional to 485,106.40, 727,659.60 and 248,910.40 is: 373,365.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,106.40 : 727,659.60 = 248,910.40 : x
  2. Step 2: Convert to fraction form
    485,106.40/727,659.60 = 248,910.40/x
  3. Step 3: Cross multiply
    485,106.40x = 727,659.60 × 248,910.40
  4. Step 4: Simplify right side
    485,106.40x = 181,122,042,099.84
  5. Step 5: Solve for x
    x = 181,122,042,099.84/485,106.40
  6. Step 6: Final answer
    x = 373,365.60

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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.