Home / 485,989.48-670,656.09-268,218.64

Finding the Fourth Proportional to 485,989.48, 670,656.09 and 268,218.64

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Solution

The fourth proportional to 485,989.48, 670,656.09 and 268,218.64 is: 370,136.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,989.48 : 670,656.09 = 268,218.64 : x
  2. Step 2: Convert to fraction form
    485,989.48/670,656.09 = 268,218.64/x
  3. Step 3: Cross multiply
    485,989.48x = 670,656.09 × 268,218.64
  4. Step 4: Simplify right side
    485,989.48x = 179,882,464,367.52
  5. Step 5: Solve for x
    x = 179,882,464,367.52/485,989.48
  6. Step 6: Final answer
    x = 370,136.54

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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.