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Finding the Fourth Proportional to 324,900.48, 487,291.20 and 147,364.80

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Solution

The fourth proportional to 324,900.48, 487,291.20 and 147,364.80 is: 221,020.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,900.48 : 487,291.20 = 147,364.80 : x
  2. Step 2: Convert to fraction form
    324,900.48/487,291.20 = 147,364.80/x
  3. Step 3: Cross multiply
    324,900.48x = 487,291.20 × 147,364.80
  4. Step 4: Simplify right side
    324,900.48x = 71,809,570,229.76
  5. Step 5: Solve for x
    x = 71,809,570,229.76/324,900.48
  6. Step 6: Final answer
    x = 221,020.20

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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.