Home / 276,643.20-414,908.10-76,913.40

Finding the Fourth Proportional to 276,643.20, 414,908.10 and 76,913.40

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Solution

The fourth proportional to 276,643.20, 414,908.10 and 76,913.40 is: 115,354.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,643.20 : 414,908.10 = 76,913.40 : x
  2. Step 2: Convert to fraction form
    276,643.20/414,908.10 = 76,913.40/x
  3. Step 3: Cross multiply
    276,643.20x = 414,908.10 × 76,913.40
  4. Step 4: Simplify right side
    276,643.20x = 31,911,992,658.54
  5. Step 5: Solve for x
    x = 31,911,992,658.54/276,643.20
  6. Step 6: Final answer
    x = 115,354.34

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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.