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Finding the Fourth Proportional to 446,203.80, 668,139.30 and 287,573.40

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Solution

The fourth proportional to 446,203.80, 668,139.30 and 287,573.40 is: 430,608.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,203.80 : 668,139.30 = 287,573.40 : x
  2. Step 2: Convert to fraction form
    446,203.80/668,139.30 = 287,573.40/x
  3. Step 3: Cross multiply
    446,203.80x = 668,139.30 × 287,573.40
  4. Step 4: Simplify right side
    446,203.80x = 192,139,090,174.62
  5. Step 5: Solve for x
    x = 192,139,090,174.62/446,203.80
  6. Step 6: Final answer
    x = 430,608.37

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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.