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Finding the Fourth Proportional to 319,397.84, 479,178.84 and 119,720.96

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Solution

The fourth proportional to 319,397.84, 479,178.84 and 119,720.96 is: 179,612.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,397.84 : 479,178.84 = 119,720.96 : x
  2. Step 2: Convert to fraction form
    319,397.84/479,178.84 = 119,720.96/x
  3. Step 3: Cross multiply
    319,397.84x = 479,178.84 × 119,720.96
  4. Step 4: Simplify right side
    319,397.84x = 57,367,750,736.49
  5. Step 5: Solve for x
    x = 57,367,750,736.49/319,397.84
  6. Step 6: Final answer
    x = 179,612.21

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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.