Home / 245,822.40-339,233.92-138,392.64

Finding the Fourth Proportional to 245,822.40, 339,233.92 and 138,392.64

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Solution

The fourth proportional to 245,822.40, 339,233.92 and 138,392.64 is: 190,981.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,822.40 : 339,233.92 = 138,392.64 : x
  2. Step 2: Convert to fraction form
    245,822.40/339,233.92 = 138,392.64/x
  3. Step 3: Cross multiply
    245,822.40x = 339,233.92 × 138,392.64
  4. Step 4: Simplify right side
    245,822.40x = 46,947,477,766.35
  5. Step 5: Solve for x
    x = 46,947,477,766.35/245,822.40
  6. Step 6: Final answer
    x = 190,981.28

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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.