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Finding the Fourth Proportional to 324,768.40, 487,226.40 and 147,326.20

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Solution

The fourth proportional to 324,768.40, 487,226.40 and 147,326.20 is: 221,022.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,768.40 : 487,226.40 = 147,326.20 : x
  2. Step 2: Convert to fraction form
    324,768.40/487,226.40 = 147,326.20/x
  3. Step 3: Cross multiply
    324,768.40x = 487,226.40 × 147,326.20
  4. Step 4: Simplify right side
    324,768.40x = 71,781,214,051.68
  5. Step 5: Solve for x
    x = 71,781,214,051.68/324,768.40
  6. Step 6: Final answer
    x = 221,022.78

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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.