Home / 432,131.60-647,890.20-165,789.20

Finding the Fourth Proportional to 432,131.60, 647,890.20 and 165,789.20

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Solution

The fourth proportional to 432,131.60, 647,890.20 and 165,789.20 is: 248,565.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,131.60 : 647,890.20 = 165,789.20 : x
  2. Step 2: Convert to fraction form
    432,131.60/647,890.20 = 165,789.20/x
  3. Step 3: Cross multiply
    432,131.60x = 647,890.20 × 165,789.20
  4. Step 4: Simplify right side
    432,131.60x = 107,413,197,945.84
  5. Step 5: Solve for x
    x = 107,413,197,945.84/432,131.60
  6. Step 6: Final answer
    x = 248,565.94

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1.5x scale

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.