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Finding the Fourth Proportional to 250,656.88, 345,911.88 and 137,479.36

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Solution

The fourth proportional to 250,656.88, 345,911.88 and 137,479.36 is: 189,724.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,656.88 : 345,911.88 = 137,479.36 : x
  2. Step 2: Convert to fraction form
    250,656.88/345,911.88 = 137,479.36/x
  3. Step 3: Cross multiply
    250,656.88x = 345,911.88 × 137,479.36
  4. Step 4: Simplify right side
    250,656.88x = 47,555,743,878.80
  5. Step 5: Solve for x
    x = 47,555,743,878.80/250,656.88
  6. Step 6: Final answer
    x = 189,724.47

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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.