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Finding the Fourth Proportional to 250,655.88, 345,910.50 and 137,478.36

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Solution

The fourth proportional to 250,655.88, 345,910.50 and 137,478.36 is: 189,723.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,655.88 : 345,910.50 = 137,478.36 : x
  2. Step 2: Convert to fraction form
    250,655.88/345,910.50 = 137,478.36/x
  3. Step 3: Cross multiply
    250,655.88x = 345,910.50 × 137,478.36
  4. Step 4: Simplify right side
    250,655.88x = 47,555,208,246.78
  5. Step 5: Solve for x
    x = 47,555,208,246.78/250,655.88
  6. Step 6: Final answer
    x = 189,723.09

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1.5x scale

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.