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Finding the Fourth Proportional to 262,108.98, 392,664.78 and 135,559.62

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Solution

The fourth proportional to 262,108.98, 392,664.78 and 135,559.62 is: 203,081.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,108.98 : 392,664.78 = 135,559.62 : x
  2. Step 2: Convert to fraction form
    262,108.98/392,664.78 = 135,559.62/x
  3. Step 3: Cross multiply
    262,108.98x = 392,664.78 × 135,559.62
  4. Step 4: Simplify right side
    262,108.98x = 53,229,488,364.18
  5. Step 5: Solve for x
    x = 53,229,488,364.18/262,108.98
  6. Step 6: Final answer
    x = 203,081.51

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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.