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Finding the Fourth Proportional to 218,334.60, 327,437.10 and 85,138.20

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Solution

The fourth proportional to 218,334.60, 327,437.10 and 85,138.20 is: 127,682.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,334.60 : 327,437.10 = 85,138.20 : x
  2. Step 2: Convert to fraction form
    218,334.60/327,437.10 = 85,138.20/x
  3. Step 3: Cross multiply
    218,334.60x = 327,437.10 × 85,138.20
  4. Step 4: Simplify right side
    218,334.60x = 27,877,405,307.22
  5. Step 5: Solve for x
    x = 27,877,405,307.22/218,334.60
  6. Step 6: Final answer
    x = 127,682.03

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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.