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Finding the Fourth Proportional to 276,366.44, 414,549.70 and 76,686.86

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Solution

The fourth proportional to 276,366.44, 414,549.70 and 76,686.86 is: 115,030.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,366.44 : 414,549.70 = 76,686.86 : x
  2. Step 2: Convert to fraction form
    276,366.44/414,549.70 = 76,686.86/x
  3. Step 3: Cross multiply
    276,366.44x = 414,549.70 × 76,686.86
  4. Step 4: Simplify right side
    276,366.44x = 31,790,514,806.94
  5. Step 5: Solve for x
    x = 31,790,514,806.94/276,366.44
  6. Step 6: Final answer
    x = 115,030.30

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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.