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Finding the Fourth Proportional to 245,196.84, 338,380.44 and 137,764.80

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Solution

The fourth proportional to 245,196.84, 338,380.44 and 137,764.80 is: 190,120.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,196.84 : 338,380.44 = 137,764.80 : x
  2. Step 2: Convert to fraction form
    245,196.84/338,380.44 = 137,764.80/x
  3. Step 3: Cross multiply
    245,196.84x = 338,380.44 × 137,764.80
  4. Step 4: Simplify right side
    245,196.84x = 46,616,913,640.51
  5. Step 5: Solve for x
    x = 46,616,913,640.51/245,196.84
  6. Step 6: Final answer
    x = 190,120.37

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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.