Home / 245,816.57-339,233.20-138,390.42

Finding the Fourth Proportional to 245,816.57, 339,233.20 and 138,390.42

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Solution

The fourth proportional to 245,816.57, 339,233.20 and 138,390.42 is: 190,982.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,816.57 : 339,233.20 = 138,390.42 : x
  2. Step 2: Convert to fraction form
    245,816.57/339,233.20 = 138,390.42/x
  3. Step 3: Cross multiply
    245,816.57x = 339,233.20 × 138,390.42
  4. Step 4: Simplify right side
    245,816.57x = 46,946,625,952.09
  5. Step 5: Solve for x
    x = 46,946,625,952.09/245,816.57
  6. Step 6: Final answer
    x = 190,982.35

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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.