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Finding the Fourth Proportional to 275,576.40, 380,266.05 and 154,730.97

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Solution

The fourth proportional to 275,576.40, 380,266.05 and 154,730.97 is: 213,512.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,576.40 : 380,266.05 = 154,730.97 : x
  2. Step 2: Convert to fraction form
    275,576.40/380,266.05 = 154,730.97/x
  3. Step 3: Cross multiply
    275,576.40x = 380,266.05 × 154,730.97
  4. Step 4: Simplify right side
    275,576.40x = 58,838,934,774.57
  5. Step 5: Solve for x
    x = 58,838,934,774.57/275,576.40
  6. Step 6: Final answer
    x = 213,512.24

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1.5x scale

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.