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Finding the Fourth Proportional to 432,600.20, 648,641.10 and 222,648.20

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Solution

The fourth proportional to 432,600.20, 648,641.10 and 222,648.20 is: 333,838.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,600.20 : 648,641.10 = 222,648.20 : x
  2. Step 2: Convert to fraction form
    432,600.20/648,641.10 = 222,648.20/x
  3. Step 3: Cross multiply
    432,600.20x = 648,641.10 × 222,648.20
  4. Step 4: Simplify right side
    432,600.20x = 144,418,773,361.02
  5. Step 5: Solve for x
    x = 144,418,773,361.02/432,600.20
  6. Step 6: Final answer
    x = 333,838.90

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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.