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Finding the Fourth Proportional to 309,463.58, 427,059.38 and 173,497.56

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Solution

The fourth proportional to 309,463.58, 427,059.38 and 173,497.56 is: 239,426.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,463.58 : 427,059.38 = 173,497.56 : x
  2. Step 2: Convert to fraction form
    309,463.58/427,059.38 = 173,497.56/x
  3. Step 3: Cross multiply
    309,463.58x = 427,059.38 × 173,497.56
  4. Step 4: Simplify right side
    309,463.58x = 74,093,759,537.63
  5. Step 5: Solve for x
    x = 74,093,759,537.63/309,463.58
  6. Step 6: Final answer
    x = 239,426.43

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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.