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Finding the Fourth Proportional to 276,404.60, 414,609.21 and 76,740.56

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Solution

The fourth proportional to 276,404.60, 414,609.21 and 76,740.56 is: 115,111.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,404.60 : 414,609.21 = 76,740.56 : x
  2. Step 2: Convert to fraction form
    276,404.60/414,609.21 = 76,740.56/x
  3. Step 3: Cross multiply
    276,404.60x = 414,609.21 × 76,740.56
  4. Step 4: Simplify right side
    276,404.60x = 31,817,340,883.51
  5. Step 5: Solve for x
    x = 31,817,340,883.51/276,404.60
  6. Step 6: Final answer
    x = 115,111.48

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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.