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Finding the Fourth Proportional to 613,177.84, 919,433.22 and 213,711.40

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Solution

The fourth proportional to 613,177.84, 919,433.22 and 213,711.40 is: 320,450.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,177.84 : 919,433.22 = 213,711.40 : x
  2. Step 2: Convert to fraction form
    613,177.84/919,433.22 = 213,711.40/x
  3. Step 3: Cross multiply
    613,177.84x = 919,433.22 × 213,711.40
  4. Step 4: Simplify right side
    613,177.84x = 196,493,360,652.71
  5. Step 5: Solve for x
    x = 196,493,360,652.71/613,177.84
  6. Step 6: Final answer
    x = 320,450.85

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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.