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Finding the Fourth Proportional to 276,454.49, 414,658.91 and 76,779.56

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Solution

The fourth proportional to 276,454.49, 414,658.91 and 76,779.56 is: 115,163.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,454.49 : 414,658.91 = 76,779.56 : x
  2. Step 2: Convert to fraction form
    276,454.49/414,658.91 = 76,779.56/x
  3. Step 3: Cross multiply
    276,454.49x = 414,658.91 × 76,779.56
  4. Step 4: Simplify right side
    276,454.49x = 31,837,329,888.48
  5. Step 5: Solve for x
    x = 31,837,329,888.48/276,454.49
  6. Step 6: Final answer
    x = 115,163.01

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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.