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Finding the Fourth Proportional to 292,792.39, 439,195.87 and 82,428.91

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Solution

The fourth proportional to 292,792.39, 439,195.87 and 82,428.91 is: 123,645.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,792.39 : 439,195.87 = 82,428.91 : x
  2. Step 2: Convert to fraction form
    292,792.39/439,195.87 = 82,428.91/x
  3. Step 3: Cross multiply
    292,792.39x = 439,195.87 × 82,428.91
  4. Step 4: Simplify right side
    292,792.39x = 36,202,435,845.65
  5. Step 5: Solve for x
    x = 36,202,435,845.65/292,792.39
  6. Step 6: Final answer
    x = 123,645.41

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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.