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Finding the Fourth Proportional to 617,785.17, 926,703.67 and 218,429.25

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Solution

The fourth proportional to 617,785.17, 926,703.67 and 218,429.25 is: 327,653.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,785.17 : 926,703.67 = 218,429.25 : x
  2. Step 2: Convert to fraction form
    617,785.17/926,703.67 = 218,429.25/x
  3. Step 3: Cross multiply
    617,785.17x = 926,703.67 × 218,429.25
  4. Step 4: Simplify right side
    617,785.17x = 202,419,187,610.35
  5. Step 5: Solve for x
    x = 202,419,187,610.35/617,785.17
  6. Step 6: Final answer
    x = 327,653.04

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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.