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Finding the Fourth Proportional to 319,940.64, 441,516.69 and 176,699.97

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Solution

The fourth proportional to 319,940.64, 441,516.69 and 176,699.97 is: 243,845.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,940.64 : 441,516.69 = 176,699.97 : x
  2. Step 2: Convert to fraction form
    319,940.64/441,516.69 = 176,699.97/x
  3. Step 3: Cross multiply
    319,940.64x = 441,516.69 × 176,699.97
  4. Step 4: Simplify right side
    319,940.64x = 78,015,985,877.50
  5. Step 5: Solve for x
    x = 78,015,985,877.50/319,940.64
  6. Step 6: Final answer
    x = 243,845.19

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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.