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Finding the Fourth Proportional to 547,794.60, 821,691.90 and 173,855.40

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Solution

The fourth proportional to 547,794.60, 821,691.90 and 173,855.40 is: 260,783.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,794.60 : 821,691.90 = 173,855.40 : x
  2. Step 2: Convert to fraction form
    547,794.60/821,691.90 = 173,855.40/x
  3. Step 3: Cross multiply
    547,794.60x = 821,691.90 × 173,855.40
  4. Step 4: Simplify right side
    547,794.60x = 142,855,573,951.26
  5. Step 5: Solve for x
    x = 142,855,573,951.26/547,794.60
  6. Step 6: Final answer
    x = 260,783.10

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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.