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Finding the Fourth Proportional to 262,013.80, 392,826.30 and 84,418.60

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Solution

The fourth proportional to 262,013.80, 392,826.30 and 84,418.60 is: 126,565.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,013.80 : 392,826.30 = 84,418.60 : x
  2. Step 2: Convert to fraction form
    262,013.80/392,826.30 = 84,418.60/x
  3. Step 3: Cross multiply
    262,013.80x = 392,826.30 × 84,418.60
  4. Step 4: Simplify right side
    262,013.80x = 33,161,846,289.18
  5. Step 5: Solve for x
    x = 33,161,846,289.18/262,013.80
  6. Step 6: Final answer
    x = 126,565.27

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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.