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Finding the Fourth Proportional to 612,765.74, 919,173.33 and 213,446.90

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Solution

The fourth proportional to 612,765.74, 919,173.33 and 213,446.90 is: 320,178.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,765.74 : 919,173.33 = 213,446.90 : x
  2. Step 2: Convert to fraction form
    612,765.74/919,173.33 = 213,446.90/x
  3. Step 3: Cross multiply
    612,765.74x = 919,173.33 × 213,446.90
  4. Step 4: Simplify right side
    612,765.74x = 196,194,693,255.31
  5. Step 5: Solve for x
    x = 196,194,693,255.31/612,765.74
  6. Step 6: Final answer
    x = 320,178.96

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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.