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Finding the Fourth Proportional to 617,829.60, 926,730.72 and 168,542.40

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Solution

The fourth proportional to 617,829.60, 926,730.72 and 168,542.40 is: 252,809.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,829.60 : 926,730.72 = 168,542.40 : x
  2. Step 2: Convert to fraction form
    617,829.60/926,730.72 = 168,542.40/x
  3. Step 3: Cross multiply
    617,829.60x = 926,730.72 × 168,542.40
  4. Step 4: Simplify right side
    617,829.60x = 156,193,419,702.53
  5. Step 5: Solve for x
    x = 156,193,419,702.53/617,829.60
  6. Step 6: Final answer
    x = 252,809.87

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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.