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Finding the Fourth Proportional to 284,687.33, 392,868.60 and 155,626.37

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Solution

The fourth proportional to 284,687.33, 392,868.60 and 155,626.37 is: 214,764.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,687.33 : 392,868.60 = 155,626.37 : x
  2. Step 2: Convert to fraction form
    284,687.33/392,868.60 = 155,626.37/x
  3. Step 3: Cross multiply
    284,687.33x = 392,868.60 × 155,626.37
  4. Step 4: Simplify right side
    284,687.33x = 61,140,714,104.98
  5. Step 5: Solve for x
    x = 61,140,714,104.98/284,687.33
  6. Step 6: Final answer
    x = 214,764.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.