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Finding the Fourth Proportional to 245,157.79, 338,315.73 and 137,725.54

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Solution

The fourth proportional to 245,157.79, 338,315.73 and 137,725.54 is: 190,060.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,157.79 : 338,315.73 = 137,725.54 : x
  2. Step 2: Convert to fraction form
    245,157.79/338,315.73 = 137,725.54/x
  3. Step 3: Cross multiply
    245,157.79x = 338,315.73 × 137,725.54
  4. Step 4: Simplify right side
    245,157.79x = 46,594,716,604.74
  5. Step 5: Solve for x
    x = 46,594,716,604.74/245,157.79
  6. Step 6: Final answer
    x = 190,060.11

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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.