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Finding the Fourth Proportional to 485,757.63, 728,685.03 and 148,794.39

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Solution

The fourth proportional to 485,757.63, 728,685.03 and 148,794.39 is: 223,206.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,757.63 : 728,685.03 = 148,794.39 : x
  2. Step 2: Convert to fraction form
    485,757.63/728,685.03 = 148,794.39/x
  3. Step 3: Cross multiply
    485,757.63x = 728,685.03 × 148,794.39
  4. Step 4: Simplify right side
    485,757.63x = 108,424,244,540.98
  5. Step 5: Solve for x
    x = 108,424,244,540.98/485,757.63
  6. Step 6: Final answer
    x = 223,206.47

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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.