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Finding the Fourth Proportional to 230,884.80, 346,327.20 and 213,604.80

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Solution

The fourth proportional to 230,884.80, 346,327.20 and 213,604.80 is: 320,407.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,884.80 : 346,327.20 = 213,604.80 : x
  2. Step 2: Convert to fraction form
    230,884.80/346,327.20 = 213,604.80/x
  3. Step 3: Cross multiply
    230,884.80x = 346,327.20 × 213,604.80
  4. Step 4: Simplify right side
    230,884.80x = 73,977,152,290.56
  5. Step 5: Solve for x
    x = 73,977,152,290.56/230,884.80
  6. Step 6: Final answer
    x = 320,407.20

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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.