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Finding the Fourth Proportional to 245,149.80, 338,304.68 and 137,717.53

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Solution

The fourth proportional to 245,149.80, 338,304.68 and 137,717.53 is: 190,049.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,149.80 : 338,304.68 = 137,717.53 : x
  2. Step 2: Convert to fraction form
    245,149.80/338,304.68 = 137,717.53/x
  3. Step 3: Cross multiply
    245,149.80x = 338,304.68 × 137,717.53
  4. Step 4: Simplify right side
    245,149.80x = 46,590,484,415.57
  5. Step 5: Solve for x
    x = 46,590,484,415.57/245,149.80
  6. Step 6: Final answer
    x = 190,049.04

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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.