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Finding the Fourth Proportional to 275,725.30, 385,228.10 and 275,725.30

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Solution

The fourth proportional to 275,725.30, 385,228.10 and 275,725.30 is: 385,228.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,725.30 : 385,228.10 = 275,725.30 : x
  2. Step 2: Convert to fraction form
    275,725.30/385,228.10 = 275,725.30/x
  3. Step 3: Cross multiply
    275,725.30x = 385,228.10 × 275,725.30
  4. Step 4: Simplify right side
    275,725.30x = 106,217,133,440.93
  5. Step 5: Solve for x
    x = 106,217,133,440.93/275,725.30
  6. Step 6: Final answer
    x = 385,228.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.