Home / 319,920.03-479,510.99-120,112.98

Finding the Fourth Proportional to 319,920.03, 479,510.99 and 120,112.98

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Solution

The fourth proportional to 319,920.03, 479,510.99 and 120,112.98 is: 180,030.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,920.03 : 479,510.99 = 120,112.98 : x
  2. Step 2: Convert to fraction form
    319,920.03/479,510.99 = 120,112.98/x
  3. Step 3: Cross multiply
    319,920.03x = 479,510.99 × 120,112.98
  4. Step 4: Simplify right side
    319,920.03x = 57,595,493,951.65
  5. Step 5: Solve for x
    x = 57,595,493,951.65/319,920.03
  6. Step 6: Final answer
    x = 180,030.91

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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.