Home / 285,920.45-428,339.30-190,863.98

Finding the Fourth Proportional to 285,920.45, 428,339.30 and 190,863.98

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Solution

The fourth proportional to 285,920.45, 428,339.30 and 190,863.98 is: 285,934.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,920.45 : 428,339.30 = 190,863.98 : x
  2. Step 2: Convert to fraction form
    285,920.45/428,339.30 = 190,863.98/x
  3. Step 3: Cross multiply
    285,920.45x = 428,339.30 × 190,863.98
  4. Step 4: Simplify right side
    285,920.45x = 81,754,543,588.41
  5. Step 5: Solve for x
    x = 81,754,543,588.41/285,920.45
  6. Step 6: Final answer
    x = 285,934.58

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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.