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Finding the Fourth Proportional to 486,430.60, 729,648.33 and 219,879.04

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Solution

The fourth proportional to 486,430.60, 729,648.33 and 219,879.04 is: 329,819.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,430.60 : 729,648.33 = 219,879.04 : x
  2. Step 2: Convert to fraction form
    486,430.60/729,648.33 = 219,879.04/x
  3. Step 3: Cross multiply
    486,430.60x = 729,648.33 × 219,879.04
  4. Step 4: Simplify right side
    486,430.60x = 160,434,374,338.00
  5. Step 5: Solve for x
    x = 160,434,374,338.00/486,430.60
  6. Step 6: Final answer
    x = 329,819.66

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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.