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Finding the Fourth Proportional to 309,872.52, 427,606.56 and 173,893.77

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Solution

The fourth proportional to 309,872.52, 427,606.56 and 173,893.77 is: 239,963.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,872.52 : 427,606.56 = 173,893.77 : x
  2. Step 2: Convert to fraction form
    309,872.52/427,606.56 = 173,893.77/x
  3. Step 3: Cross multiply
    309,872.52x = 427,606.56 × 173,893.77
  4. Step 4: Simplify right side
    309,872.52x = 74,358,116,795.13
  5. Step 5: Solve for x
    x = 74,358,116,795.13/309,872.52
  6. Step 6: Final answer
    x = 239,963.57

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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.