Home / 319,780.70-479,541.45-109,310.30

Finding the Fourth Proportional to 319,780.70, 479,541.45 and 109,310.30

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Solution

The fourth proportional to 319,780.70, 479,541.45 and 109,310.30 is: 163,921.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,780.70 : 479,541.45 = 109,310.30 : x
  2. Step 2: Convert to fraction form
    319,780.70/479,541.45 = 109,310.30/x
  3. Step 3: Cross multiply
    319,780.70x = 479,541.45 × 109,310.30
  4. Step 4: Simplify right side
    319,780.70x = 52,418,819,761.94
  5. Step 5: Solve for x
    x = 52,418,819,761.94/319,780.70
  6. Step 6: Final answer
    x = 163,921.15

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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.