Home / 319,477.10-479,215.65-82,817.90

Finding the Fourth Proportional to 319,477.10, 479,215.65 and 82,817.90

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Solution

The fourth proportional to 319,477.10, 479,215.65 and 82,817.90 is: 124,226.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,477.10 : 479,215.65 = 82,817.90 : x
  2. Step 2: Convert to fraction form
    319,477.10/479,215.65 = 82,817.90/x
  3. Step 3: Cross multiply
    319,477.10x = 479,215.65 × 82,817.90
  4. Step 4: Simplify right side
    319,477.10x = 39,687,633,780.14
  5. Step 5: Solve for x
    x = 39,687,633,780.14/319,477.10
  6. Step 6: Final answer
    x = 124,226.85

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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.