Home / 245,801.40-339,238.27-138,392.36

Finding the Fourth Proportional to 245,801.40, 339,238.27 and 138,392.36

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Solution

The fourth proportional to 245,801.40, 339,238.27 and 138,392.36 is: 190,999.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,801.40 : 339,238.27 = 138,392.36 : x
  2. Step 2: Convert to fraction form
    245,801.40/339,238.27 = 138,392.36/x
  3. Step 3: Cross multiply
    245,801.40x = 339,238.27 × 138,392.36
  4. Step 4: Simplify right side
    245,801.40x = 46,947,984,787.62
  5. Step 5: Solve for x
    x = 46,947,984,787.62/245,801.40
  6. Step 6: Final answer
    x = 190,999.66

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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.