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Finding the Fourth Proportional to 612,771.74, 919,182.34 and 213,452.90

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Solution

The fourth proportional to 612,771.74, 919,182.34 and 213,452.90 is: 320,187.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,771.74 : 919,182.34 = 213,452.90 : x
  2. Step 2: Convert to fraction form
    612,771.74/919,182.34 = 213,452.90/x
  3. Step 3: Cross multiply
    612,771.74x = 919,182.34 × 213,452.90
  4. Step 4: Simplify right side
    612,771.74x = 196,202,136,101.79
  5. Step 5: Solve for x
    x = 196,202,136,101.79/612,771.74
  6. Step 6: Final answer
    x = 320,187.96

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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.