Home / 218,824.56-328,238.28-78,584.40

Finding the Fourth Proportional to 218,824.56, 328,238.28 and 78,584.40

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Solution

The fourth proportional to 218,824.56, 328,238.28 and 78,584.40 is: 117,877.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,824.56 : 328,238.28 = 78,584.40 : x
  2. Step 2: Convert to fraction form
    218,824.56/328,238.28 = 78,584.40/x
  3. Step 3: Cross multiply
    218,824.56x = 328,238.28 × 78,584.40
  4. Step 4: Simplify right side
    218,824.56x = 25,794,408,290.83
  5. Step 5: Solve for x
    x = 25,794,408,290.83/218,824.56
  6. Step 6: Final answer
    x = 117,877.12

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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.