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Finding the Fourth Proportional to 275,132.70, 379,701.27 and 154,281.71

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Solution

The fourth proportional to 275,132.70, 379,701.27 and 154,281.71 is: 212,918.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,132.70 : 379,701.27 = 154,281.71 : x
  2. Step 2: Convert to fraction form
    275,132.70/379,701.27 = 154,281.71/x
  3. Step 3: Cross multiply
    275,132.70x = 379,701.27 × 154,281.71
  4. Step 4: Simplify right side
    275,132.70x = 58,580,962,174.02
  5. Step 5: Solve for x
    x = 58,580,962,174.02/275,132.70
  6. Step 6: Final answer
    x = 212,918.94

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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.