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Finding the Fourth Proportional to 432,010.80, 647,497.80 and 221,540.40

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Solution

The fourth proportional to 432,010.80, 647,497.80 and 221,540.40 is: 332,044.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,010.80 : 647,497.80 = 221,540.40 : x
  2. Step 2: Convert to fraction form
    432,010.80/647,497.80 = 221,540.40/x
  3. Step 3: Cross multiply
    432,010.80x = 647,497.80 × 221,540.40
  4. Step 4: Simplify right side
    432,010.80x = 143,446,921,611.12
  5. Step 5: Solve for x
    x = 143,446,921,611.12/432,010.80
  6. Step 6: Final answer
    x = 332,044.76

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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.