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Finding the Fourth Proportional to 432,402.80, 648,604.20 and 299,433.20

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Solution

The fourth proportional to 432,402.80, 648,604.20 and 299,433.20 is: 449,149.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,402.80 : 648,604.20 = 299,433.20 : x
  2. Step 2: Convert to fraction form
    432,402.80/648,604.20 = 299,433.20/x
  3. Step 3: Cross multiply
    432,402.80x = 648,604.20 × 299,433.20
  4. Step 4: Simplify right side
    432,402.80x = 194,213,631,139.44
  5. Step 5: Solve for x
    x = 194,213,631,139.44/432,402.80
  6. Step 6: Final answer
    x = 449,149.80

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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.