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Finding the Fourth Proportional to 275,387.01, 380,071.91 and 154,535.45

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Solution

The fourth proportional to 275,387.01, 380,071.91 and 154,535.45 is: 213,280.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,387.01 : 380,071.91 = 154,535.45 : x
  2. Step 2: Convert to fraction form
    275,387.01/380,071.91 = 154,535.45/x
  3. Step 3: Cross multiply
    275,387.01x = 380,071.91 × 154,535.45
  4. Step 4: Simplify right side
    275,387.01x = 58,734,583,644.21
  5. Step 5: Solve for x
    x = 58,734,583,644.21/275,387.01
  6. Step 6: Final answer
    x = 213,280.15

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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.