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Finding the Fourth Proportional to 264,769.20, 397,115.40 and 77,761.20

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Solution

The fourth proportional to 264,769.20, 397,115.40 and 77,761.20 is: 116,630.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,769.20 : 397,115.40 = 77,761.20 : x
  2. Step 2: Convert to fraction form
    264,769.20/397,115.40 = 77,761.20/x
  3. Step 3: Cross multiply
    264,769.20x = 397,115.40 × 77,761.20
  4. Step 4: Simplify right side
    264,769.20x = 30,880,170,042.48
  5. Step 5: Solve for x
    x = 30,880,170,042.48/264,769.20
  6. Step 6: Final answer
    x = 116,630.52

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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.