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Finding the Fourth Proportional to 324,760.40, 487,214.40 and 147,318.20

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Solution

The fourth proportional to 324,760.40, 487,214.40 and 147,318.20 is: 221,010.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,760.40 : 487,214.40 = 147,318.20 : x
  2. Step 2: Convert to fraction form
    324,760.40/487,214.40 = 147,318.20/x
  3. Step 3: Cross multiply
    324,760.40x = 487,214.40 × 147,318.20
  4. Step 4: Simplify right side
    324,760.40x = 71,775,548,422.08
  5. Step 5: Solve for x
    x = 71,775,548,422.08/324,760.40
  6. Step 6: Final answer
    x = 221,010.78

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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.