Home / 668,301.72-1,002,120.92-212,833.60

Finding the Fourth Proportional to 668,301.72, 1,002,120.92 and 212,833.60

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Solution

The fourth proportional to 668,301.72, 1,002,120.92 and 212,833.60 is: 319,144.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,301.72 : 1,002,120.92 = 212,833.60 : x
  2. Step 2: Convert to fraction form
    668,301.72/1,002,120.92 = 212,833.60/x
  3. Step 3: Cross multiply
    668,301.72x = 1,002,120.92 × 212,833.60
  4. Step 4: Simplify right side
    668,301.72x = 213,285,003,038.91
  5. Step 5: Solve for x
    x = 213,285,003,038.91/668,301.72
  6. Step 6: Final answer
    x = 319,144.78

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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.