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Finding the Fourth Proportional to 485,853.88, 670,476.62 and 270,993.79

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Solution

The fourth proportional to 485,853.88, 670,476.62 and 270,993.79 is: 373,970.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,853.88 : 670,476.62 = 270,993.79 : x
  2. Step 2: Convert to fraction form
    485,853.88/670,476.62 = 270,993.79/x
  3. Step 3: Cross multiply
    485,853.88x = 670,476.62 × 270,993.79
  4. Step 4: Simplify right side
    485,853.88x = 181,694,995,652.84
  5. Step 5: Solve for x
    x = 181,694,995,652.84/485,853.88
  6. Step 6: Final answer
    x = 373,970.46

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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.