Home / 285,634.38-428,395.98-108,155.28

Finding the Fourth Proportional to 285,634.38, 428,395.98 and 108,155.28

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Solution

The fourth proportional to 285,634.38, 428,395.98 and 108,155.28 is: 162,211.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,634.38 : 428,395.98 = 108,155.28 : x
  2. Step 2: Convert to fraction form
    285,634.38/428,395.98 = 108,155.28/x
  3. Step 3: Cross multiply
    285,634.38x = 428,395.98 × 108,155.28
  4. Step 4: Simplify right side
    285,634.38x = 46,333,287,167.77
  5. Step 5: Solve for x
    x = 46,333,287,167.77/285,634.38
  6. Step 6: Final answer
    x = 162,211.87

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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.