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Finding the Fourth Proportional to 245,757.58, 339,108.54 and 138,321.22

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Solution

The fourth proportional to 245,757.58, 339,108.54 and 138,321.22 is: 190,862.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,757.58 : 339,108.54 = 138,321.22 : x
  2. Step 2: Convert to fraction form
    245,757.58/339,108.54 = 138,321.22/x
  3. Step 3: Cross multiply
    245,757.58x = 339,108.54 × 138,321.22
  4. Step 4: Simplify right side
    245,757.58x = 46,905,906,965.22
  5. Step 5: Solve for x
    x = 46,905,906,965.22/245,757.58
  6. Step 6: Final answer
    x = 190,862.50

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1.5x scale

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.