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Finding the Fourth Proportional to 245,175.76, 338,342.88 and 137,745.88

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Solution

The fourth proportional to 245,175.76, 338,342.88 and 137,745.88 is: 190,089.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,175.76 : 338,342.88 = 137,745.88 : x
  2. Step 2: Convert to fraction form
    245,175.76/338,342.88 = 137,745.88/x
  3. Step 3: Cross multiply
    245,175.76x = 338,342.88 × 137,745.88
  4. Step 4: Simplify right side
    245,175.76x = 46,605,337,747.33
  5. Step 5: Solve for x
    x = 46,605,337,747.33/245,175.76
  6. Step 6: Final answer
    x = 190,089.50

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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.