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Finding the Fourth Proportional to 218,416.60, 327,624.90 and 129,624.40

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Solution

The fourth proportional to 218,416.60, 327,624.90 and 129,624.40 is: 194,436.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,416.60 : 327,624.90 = 129,624.40 : x
  2. Step 2: Convert to fraction form
    218,416.60/327,624.90 = 129,624.40/x
  3. Step 3: Cross multiply
    218,416.60x = 327,624.90 × 129,624.40
  4. Step 4: Simplify right side
    218,416.60x = 42,468,181,087.56
  5. Step 5: Solve for x
    x = 42,468,181,087.56/218,416.60
  6. Step 6: Final answer
    x = 194,436.60

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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.