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Finding the Fourth Proportional to 247,855.88, 342,043.20 and 134,678.64

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Solution

The fourth proportional to 247,855.88, 342,043.20 and 134,678.64 is: 185,857.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,855.88 : 342,043.20 = 134,678.64 : x
  2. Step 2: Convert to fraction form
    247,855.88/342,043.20 = 134,678.64/x
  3. Step 3: Cross multiply
    247,855.88x = 342,043.20 × 134,678.64
  4. Step 4: Simplify right side
    247,855.88x = 46,065,912,997.25
  5. Step 5: Solve for x
    x = 46,065,912,997.25/247,855.88
  6. Step 6: Final answer
    x = 185,857.66

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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.