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Finding the Fourth Proportional to 273,996.80, 410,995.20 and 76,979.20

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Solution

The fourth proportional to 273,996.80, 410,995.20 and 76,979.20 is: 115,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,996.80 : 410,995.20 = 76,979.20 : x
  2. Step 2: Convert to fraction form
    273,996.80/410,995.20 = 76,979.20/x
  3. Step 3: Cross multiply
    273,996.80x = 410,995.20 × 76,979.20
  4. Step 4: Simplify right side
    273,996.80x = 31,638,081,699.84
  5. Step 5: Solve for x
    x = 31,638,081,699.84/273,996.80
  6. Step 6: Final answer
    x = 115,468.80

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1.5x scale

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.