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Finding the Fourth Proportional to 247,820.63, 342,021.62 and 147,218.63

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Solution

The fourth proportional to 247,820.63, 342,021.62 and 147,218.63 is: 203,179.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,820.63 : 342,021.62 = 147,218.63 : x
  2. Step 2: Convert to fraction form
    247,820.63/342,021.62 = 147,218.63/x
  3. Step 3: Cross multiply
    247,820.63x = 342,021.62 × 147,218.63
  4. Step 4: Simplify right side
    247,820.63x = 50,351,952,984.72
  5. Step 5: Solve for x
    x = 50,351,952,984.72/247,820.63
  6. Step 6: Final answer
    x = 203,179.03

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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.