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Finding the Fourth Proportional to 245,616.70, 338,923.62 and 138,184.42

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Solution

The fourth proportional to 245,616.70, 338,923.62 and 138,184.42 is: 190,679.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,616.70 : 338,923.62 = 138,184.42 : x
  2. Step 2: Convert to fraction form
    245,616.70/338,923.62 = 138,184.42/x
  3. Step 3: Cross multiply
    245,616.70x = 338,923.62 × 138,184.42
  4. Step 4: Simplify right side
    245,616.70x = 46,833,964,206.75
  5. Step 5: Solve for x
    x = 46,833,964,206.75/245,616.70
  6. Step 6: Final answer
    x = 190,679.07

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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.