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Finding the Fourth Proportional to 324,147.30, 485,999.55 and 146,557.50

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Solution

The fourth proportional to 324,147.30, 485,999.55 and 146,557.50 is: 219,736.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,147.30 : 485,999.55 = 146,557.50 : x
  2. Step 2: Convert to fraction form
    324,147.30/485,999.55 = 146,557.50/x
  3. Step 3: Cross multiply
    324,147.30x = 485,999.55 × 146,557.50
  4. Step 4: Simplify right side
    324,147.30x = 71,226,879,049.13
  5. Step 5: Solve for x
    x = 71,226,879,049.13/324,147.30
  6. Step 6: Final answer
    x = 219,736.15

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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.