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Finding the Fourth Proportional to 212,925.80, 319,388.70 and 195,722.60

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Solution

The fourth proportional to 212,925.80, 319,388.70 and 195,722.60 is: 293,583.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,925.80 : 319,388.70 = 195,722.60 : x
  2. Step 2: Convert to fraction form
    212,925.80/319,388.70 = 195,722.60/x
  3. Step 3: Cross multiply
    212,925.80x = 319,388.70 × 195,722.60
  4. Step 4: Simplify right side
    212,925.80x = 62,511,586,774.62
  5. Step 5: Solve for x
    x = 62,511,586,774.62/212,925.80
  6. Step 6: Final answer
    x = 293,583.90

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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.