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Finding the Fourth Proportional to 485,842.51, 670,463.84 and 270,996.49

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Solution

The fourth proportional to 485,842.51, 670,463.84 and 270,996.49 is: 373,975.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,842.51 : 670,463.84 = 270,996.49 : x
  2. Step 2: Convert to fraction form
    485,842.51/670,463.84 = 270,996.49/x
  3. Step 3: Cross multiply
    485,842.51x = 670,463.84 × 270,996.49
  4. Step 4: Simplify right side
    485,842.51x = 181,693,347,311.92
  5. Step 5: Solve for x
    x = 181,693,347,311.92/485,842.51
  6. Step 6: Final answer
    x = 373,975.81

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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.