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Finding the Fourth Proportional to 324,771.40, 487,230.90 and 147,329.20

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Solution

The fourth proportional to 324,771.40, 487,230.90 and 147,329.20 is: 221,027.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,771.40 : 487,230.90 = 147,329.20 : x
  2. Step 2: Convert to fraction form
    324,771.40/487,230.90 = 147,329.20/x
  3. Step 3: Cross multiply
    324,771.40x = 487,230.90 × 147,329.20
  4. Step 4: Simplify right side
    324,771.40x = 71,783,338,712.28
  5. Step 5: Solve for x
    x = 71,783,338,712.28/324,771.40
  6. Step 6: Final answer
    x = 221,027.28

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1.5x scale

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.