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Finding the Fourth Proportional to 617,439.40, 926,159.10 and 218,530.60

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Solution

The fourth proportional to 617,439.40, 926,159.10 and 218,530.60 is: 327,795.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,439.40 : 926,159.10 = 218,530.60 : x
  2. Step 2: Convert to fraction form
    617,439.40/926,159.10 = 218,530.60/x
  3. Step 3: Cross multiply
    617,439.40x = 926,159.10 × 218,530.60
  4. Step 4: Simplify right side
    617,439.40x = 202,394,103,818.46
  5. Step 5: Solve for x
    x = 202,394,103,818.46/617,439.40
  6. Step 6: Final answer
    x = 327,795.90

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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.