Home / 218,961.60-328,453.20-113,985.60

Finding the Fourth Proportional to 218,961.60, 328,453.20 and 113,985.60

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Solution

The fourth proportional to 218,961.60, 328,453.20 and 113,985.60 is: 170,984.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,961.60 : 328,453.20 = 113,985.60 : x
  2. Step 2: Convert to fraction form
    218,961.60/328,453.20 = 113,985.60/x
  3. Step 3: Cross multiply
    218,961.60x = 328,453.20 × 113,985.60
  4. Step 4: Simplify right side
    218,961.60x = 37,438,935,073.92
  5. Step 5: Solve for x
    x = 37,438,935,073.92/218,961.60
  6. Step 6: Final answer
    x = 170,984.02

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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.