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Finding the Fourth Proportional to 485,760.63, 728,689.53 and 148,797.39

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Solution

The fourth proportional to 485,760.63, 728,689.53 and 148,797.39 is: 223,210.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,760.63 : 728,689.53 = 148,797.39 : x
  2. Step 2: Convert to fraction form
    485,760.63/728,689.53 = 148,797.39/x
  3. Step 3: Cross multiply
    485,760.63x = 728,689.53 × 148,797.39
  4. Step 4: Simplify right side
    485,760.63x = 108,427,100,184.33
  5. Step 5: Solve for x
    x = 108,427,100,184.33/485,760.63
  6. Step 6: Final answer
    x = 223,210.97

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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.