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Finding the Fourth Proportional to 245,825.84, 339,246.02 and 138,399.74

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Solution

The fourth proportional to 245,825.84, 339,246.02 and 138,399.74 is: 190,995.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,825.84 : 339,246.02 = 138,399.74 : x
  2. Step 2: Convert to fraction form
    245,825.84/339,246.02 = 138,399.74/x
  3. Step 3: Cross multiply
    245,825.84x = 339,246.02 × 138,399.74
  4. Step 4: Simplify right side
    245,825.84x = 46,951,560,885.98
  5. Step 5: Solve for x
    x = 46,951,560,885.98/245,825.84
  6. Step 6: Final answer
    x = 190,995.22

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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.