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Finding the Fourth Proportional to 262,792.53, 393,939.39 and 85,174.71

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Solution

The fourth proportional to 262,792.53, 393,939.39 and 85,174.71 is: 127,681.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,792.53 : 393,939.39 = 85,174.71 : x
  2. Step 2: Convert to fraction form
    262,792.53/393,939.39 = 85,174.71/x
  3. Step 3: Cross multiply
    262,792.53x = 393,939.39 × 85,174.71
  4. Step 4: Simplify right side
    262,792.53x = 33,553,673,300.83
  5. Step 5: Solve for x
    x = 33,553,673,300.83/262,792.53
  6. Step 6: Final answer
    x = 127,681.23

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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.