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Finding the Fourth Proportional to 243,721.30, 365,436.15 and 125,623.30

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Solution

The fourth proportional to 243,721.30, 365,436.15 and 125,623.30 is: 188,359.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,721.30 : 365,436.15 = 125,623.30 : x
  2. Step 2: Convert to fraction form
    243,721.30/365,436.15 = 125,623.30/x
  3. Step 3: Cross multiply
    243,721.30x = 365,436.15 × 125,623.30
  4. Step 4: Simplify right side
    243,721.30x = 45,907,295,102.30
  5. Step 5: Solve for x
    x = 45,907,295,102.30/243,721.30
  6. Step 6: Final answer
    x = 188,359.80

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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.