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Finding the Fourth Proportional to 319,393, 479,170.50 and 119,713.96

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Solution

The fourth proportional to 319,393, 479,170.50 and 119,713.96 is: 179,601.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,393 : 479,170.50 = 119,713.96 : x
  2. Step 2: Convert to fraction form
    319,393/479,170.50 = 119,713.96/x
  3. Step 3: Cross multiply
    319,393x = 479,170.50 × 119,713.96
  4. Step 4: Simplify right side
    319,393x = 57,363,398,070.18
  5. Step 5: Solve for x
    x = 57,363,398,070.18/319,393
  6. Step 6: Final answer
    x = 179,601.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.