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Finding the Fourth Proportional to 276,728.30, 415,092.45 and 89,739.80

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Solution

The fourth proportional to 276,728.30, 415,092.45 and 89,739.80 is: 134,609.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,728.30 : 415,092.45 = 89,739.80 : x
  2. Step 2: Convert to fraction form
    276,728.30/415,092.45 = 89,739.80/x
  3. Step 3: Cross multiply
    276,728.30x = 415,092.45 × 89,739.80
  4. Step 4: Simplify right side
    276,728.30x = 37,250,313,444.51
  5. Step 5: Solve for x
    x = 37,250,313,444.51/276,728.30
  6. Step 6: Final answer
    x = 134,609.70

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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.