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Finding the Fourth Proportional to 319,680.38, 441,158 and 176,439.40

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Solution

The fourth proportional to 319,680.38, 441,158 and 176,439.40 is: 243,485.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,680.38 : 441,158 = 176,439.40 : x
  2. Step 2: Convert to fraction form
    319,680.38/441,158 = 176,439.40/x
  3. Step 3: Cross multiply
    319,680.38x = 441,158 × 176,439.40
  4. Step 4: Simplify right side
    319,680.38x = 77,837,652,825.20
  5. Step 5: Solve for x
    x = 77,837,652,825.20/319,680.38
  6. Step 6: Final answer
    x = 243,485.86

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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.