Home / 320,979.10-442,945.70-177,736.06

Finding the Fourth Proportional to 320,979.10, 442,945.70 and 177,736.06

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Solution

The fourth proportional to 320,979.10, 442,945.70 and 177,736.06 is: 245,272.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,979.10 : 442,945.70 = 177,736.06 : x
  2. Step 2: Convert to fraction form
    320,979.10/442,945.70 = 177,736.06/x
  3. Step 3: Cross multiply
    320,979.10x = 442,945.70 × 177,736.06
  4. Step 4: Simplify right side
    320,979.10x = 78,727,426,089.00
  5. Step 5: Solve for x
    x = 78,727,426,089.00/320,979.10
  6. Step 6: Final answer
    x = 245,272.75

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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.