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Finding the Fourth Proportional to 617,638.46, 926,532.44 and 218,197.49

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Solution

The fourth proportional to 617,638.46, 926,532.44 and 218,197.49 is: 327,322.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,638.46 : 926,532.44 = 218,197.49 : x
  2. Step 2: Convert to fraction form
    617,638.46/926,532.44 = 218,197.49/x
  3. Step 3: Cross multiply
    617,638.46x = 926,532.44 × 218,197.49
  4. Step 4: Simplify right side
    617,638.46x = 202,167,047,087.93
  5. Step 5: Solve for x
    x = 202,167,047,087.93/617,638.46
  6. Step 6: Final answer
    x = 327,322.64

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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.