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Finding the Fourth Proportional to 486,153.40, 729,230.10 and 219,922.60

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Solution

The fourth proportional to 486,153.40, 729,230.10 and 219,922.60 is: 329,883.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,153.40 : 729,230.10 = 219,922.60 : x
  2. Step 2: Convert to fraction form
    486,153.40/729,230.10 = 219,922.60/x
  3. Step 3: Cross multiply
    486,153.40x = 729,230.10 × 219,922.60
  4. Step 4: Simplify right side
    486,153.40x = 160,374,179,590.26
  5. Step 5: Solve for x
    x = 160,374,179,590.26/486,153.40
  6. Step 6: Final answer
    x = 329,883.90

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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.