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Finding the Fourth Proportional to 358,085.38, 537,128.21 and 91,845.88

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Solution

The fourth proportional to 358,085.38, 537,128.21 and 91,845.88 is: 137,768.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,085.38 : 537,128.21 = 91,845.88 : x
  2. Step 2: Convert to fraction form
    358,085.38/537,128.21 = 91,845.88/x
  3. Step 3: Cross multiply
    358,085.38x = 537,128.21 × 91,845.88
  4. Step 4: Simplify right side
    358,085.38x = 49,333,013,120.27
  5. Step 5: Solve for x
    x = 49,333,013,120.27/358,085.38
  6. Step 6: Final answer
    x = 137,768.86

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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.