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Finding the Fourth Proportional to 275,636.41, 380,417.58 and 154,785.96

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Solution

The fourth proportional to 275,636.41, 380,417.58 and 154,785.96 is: 213,626.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,636.41 : 380,417.58 = 154,785.96 : x
  2. Step 2: Convert to fraction form
    275,636.41/380,417.58 = 154,785.96/x
  3. Step 3: Cross multiply
    275,636.41x = 380,417.58 × 154,785.96
  4. Step 4: Simplify right side
    275,636.41x = 58,883,300,321.18
  5. Step 5: Solve for x
    x = 58,883,300,321.18/275,636.41
  6. Step 6: Final answer
    x = 213,626.72

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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.