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Finding the Fourth Proportional to 245,725.92, 339,118.92 and 138,306.24

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Solution

The fourth proportional to 245,725.92, 339,118.92 and 138,306.24 is: 190,872.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,725.92 : 339,118.92 = 138,306.24 : x
  2. Step 2: Convert to fraction form
    245,725.92/339,118.92 = 138,306.24/x
  3. Step 3: Cross multiply
    245,725.92x = 339,118.92 × 138,306.24
  4. Step 4: Simplify right side
    245,725.92x = 46,902,262,738.06
  5. Step 5: Solve for x
    x = 46,902,262,738.06/245,725.92
  6. Step 6: Final answer
    x = 190,872.26

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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.