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Finding the Fourth Proportional to 275,713.08, 380,490.66 and 154,854.60

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Solution

The fourth proportional to 275,713.08, 380,490.66 and 154,854.60 is: 213,703.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,713.08 : 380,490.66 = 154,854.60 : x
  2. Step 2: Convert to fraction form
    275,713.08/380,490.66 = 154,854.60/x
  3. Step 3: Cross multiply
    275,713.08x = 380,490.66 × 154,854.60
  4. Step 4: Simplify right side
    275,713.08x = 58,920,728,958.04
  5. Step 5: Solve for x
    x = 58,920,728,958.04/275,713.08
  6. Step 6: Final answer
    x = 213,703.06

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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.