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Finding the Fourth Proportional to 319,963.72, 441,540.57 and 176,720.62

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Solution

The fourth proportional to 319,963.72, 441,540.57 and 176,720.62 is: 243,869.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,963.72 : 441,540.57 = 176,720.62 : x
  2. Step 2: Convert to fraction form
    319,963.72/441,540.57 = 176,720.62/x
  3. Step 3: Cross multiply
    319,963.72x = 441,540.57 × 176,720.62
  4. Step 4: Simplify right side
    319,963.72x = 78,029,323,285.55
  5. Step 5: Solve for x
    x = 78,029,323,285.55/319,963.72
  6. Step 6: Final answer
    x = 243,869.28

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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.