Home / 218,976.84-328,614.30-78,749.64

Finding the Fourth Proportional to 218,976.84, 328,614.30 and 78,749.64

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Solution

The fourth proportional to 218,976.84, 328,614.30 and 78,749.64 is: 118,178.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,976.84 : 328,614.30 = 78,749.64 : x
  2. Step 2: Convert to fraction form
    218,976.84/328,614.30 = 78,749.64/x
  3. Step 3: Cross multiply
    218,976.84x = 328,614.30 × 78,749.64
  4. Step 4: Simplify right side
    218,976.84x = 25,878,257,823.85
  5. Step 5: Solve for x
    x = 25,878,257,823.85/218,976.84
  6. Step 6: Final answer
    x = 118,178.06

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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.