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Finding the Fourth Proportional to 243,256.86, 335,694.33 and 135,826.83

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Solution

The fourth proportional to 243,256.86, 335,694.33 and 135,826.83 is: 187,440.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,256.86 : 335,694.33 = 135,826.83 : x
  2. Step 2: Convert to fraction form
    243,256.86/335,694.33 = 135,826.83/x
  3. Step 3: Cross multiply
    243,256.86x = 335,694.33 × 135,826.83
  4. Step 4: Simplify right side
    243,256.86x = 45,596,296,692.87
  5. Step 5: Solve for x
    x = 45,596,296,692.87/243,256.86
  6. Step 6: Final answer
    x = 187,440.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.