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Finding the Fourth Proportional to 218,722.80, 327,209.40 and 189,465.60

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Solution

The fourth proportional to 218,722.80, 327,209.40 and 189,465.60 is: 283,440.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,722.80 : 327,209.40 = 189,465.60 : x
  2. Step 2: Convert to fraction form
    218,722.80/327,209.40 = 189,465.60/x
  3. Step 3: Cross multiply
    218,722.80x = 327,209.40 × 189,465.60
  4. Step 4: Simplify right side
    218,722.80x = 61,994,925,296.64
  5. Step 5: Solve for x
    x = 61,994,925,296.64/218,722.80
  6. Step 6: Final answer
    x = 283,440.62

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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.