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Finding the Fourth Proportional to 367,579.20, 551,368.80 and 131,188.80

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Solution

The fourth proportional to 367,579.20, 551,368.80 and 131,188.80 is: 196,783.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,579.20 : 551,368.80 = 131,188.80 : x
  2. Step 2: Convert to fraction form
    367,579.20/551,368.80 = 131,188.80/x
  3. Step 3: Cross multiply
    367,579.20x = 551,368.80 × 131,188.80
  4. Step 4: Simplify right side
    367,579.20x = 72,333,411,229.44
  5. Step 5: Solve for x
    x = 72,333,411,229.44/367,579.20
  6. Step 6: Final answer
    x = 196,783.20

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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.