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Finding the Fourth Proportional to 230,968.80, 346,453.20 and 218,138.40

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Solution

The fourth proportional to 230,968.80, 346,453.20 and 218,138.40 is: 327,207.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,968.80 : 346,453.20 = 218,138.40 : x
  2. Step 2: Convert to fraction form
    230,968.80/346,453.20 = 218,138.40/x
  3. Step 3: Cross multiply
    230,968.80x = 346,453.20 × 218,138.40
  4. Step 4: Simplify right side
    230,968.80x = 75,574,746,722.88
  5. Step 5: Solve for x
    x = 75,574,746,722.88/230,968.80
  6. Step 6: Final answer
    x = 327,207.60

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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.