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Finding the Fourth Proportional to 354,709.20, 532,063.80 and 221,739.60

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Solution

The fourth proportional to 354,709.20, 532,063.80 and 221,739.60 is: 332,609.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,709.20 : 532,063.80 = 221,739.60 : x
  2. Step 2: Convert to fraction form
    354,709.20/532,063.80 = 221,739.60/x
  3. Step 3: Cross multiply
    354,709.20x = 532,063.80 × 221,739.60
  4. Step 4: Simplify right side
    354,709.20x = 117,979,614,186.48
  5. Step 5: Solve for x
    x = 117,979,614,186.48/354,709.20
  6. Step 6: Final answer
    x = 332,609.40

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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.