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Finding the Fourth Proportional to 250,220.58, 345,291.57 and 137,040.90

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Solution

The fourth proportional to 250,220.58, 345,291.57 and 137,040.90 is: 189,109.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,220.58 : 345,291.57 = 137,040.90 : x
  2. Step 2: Convert to fraction form
    250,220.58/345,291.57 = 137,040.90/x
  3. Step 3: Cross multiply
    250,220.58x = 345,291.57 × 137,040.90
  4. Step 4: Simplify right side
    250,220.58x = 47,319,067,515.21
  5. Step 5: Solve for x
    x = 47,319,067,515.21/250,220.58
  6. Step 6: Final answer
    x = 189,109.42

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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.