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Finding the Fourth Proportional to 245,173.37, 338,320.80 and 137,722.41

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Solution

The fourth proportional to 245,173.37, 338,320.80 and 137,722.41 is: 190,046.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,173.37 : 338,320.80 = 137,722.41 : x
  2. Step 2: Convert to fraction form
    245,173.37/338,320.80 = 137,722.41/x
  3. Step 3: Cross multiply
    245,173.37x = 338,320.80 × 137,722.41
  4. Step 4: Simplify right side
    245,173.37x = 46,594,355,929.13
  5. Step 5: Solve for x
    x = 46,594,355,929.13/245,173.37
  6. Step 6: Final answer
    x = 190,046.57

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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.