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Finding the Fourth Proportional to 446,676.80, 668,848.80 and 288,046.40

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Solution

The fourth proportional to 446,676.80, 668,848.80 and 288,046.40 is: 431,317.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,676.80 : 668,848.80 = 288,046.40 : x
  2. Step 2: Convert to fraction form
    446,676.80/668,848.80 = 288,046.40/x
  3. Step 3: Cross multiply
    446,676.80x = 668,848.80 × 288,046.40
  4. Step 4: Simplify right side
    446,676.80x = 192,659,488,984.32
  5. Step 5: Solve for x
    x = 192,659,488,984.32/446,676.80
  6. Step 6: Final answer
    x = 431,317.43

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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.