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Finding the Fourth Proportional to 276,220.59, 414,339.79 and 76,542.90

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Solution

The fourth proportional to 276,220.59, 414,339.79 and 76,542.90 is: 114,816.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,220.59 : 414,339.79 = 76,542.90 : x
  2. Step 2: Convert to fraction form
    276,220.59/414,339.79 = 76,542.90/x
  3. Step 3: Cross multiply
    276,220.59x = 414,339.79 × 76,542.90
  4. Step 4: Simplify right side
    276,220.59x = 31,714,767,040.29
  5. Step 5: Solve for x
    x = 31,714,767,040.29/276,220.59
  6. Step 6: Final answer
    x = 114,816.81

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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.