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Finding the Fourth Proportional to 276,771.80, 415,036.20 and 126,962.30

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Solution

The fourth proportional to 276,771.80, 415,036.20 and 126,962.30 is: 190,387.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,771.80 : 415,036.20 = 126,962.30 : x
  2. Step 2: Convert to fraction form
    276,771.80/415,036.20 = 126,962.30/x
  3. Step 3: Cross multiply
    276,771.80x = 415,036.20 × 126,962.30
  4. Step 4: Simplify right side
    276,771.80x = 52,693,950,535.26
  5. Step 5: Solve for x
    x = 52,693,950,535.26/276,771.80
  6. Step 6: Final answer
    x = 190,387.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.