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Finding the Fourth Proportional to 409,622.60, 614,520.30 and 172,843.40

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Solution

The fourth proportional to 409,622.60, 614,520.30 and 172,843.40 is: 259,301.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,622.60 : 614,520.30 = 172,843.40 : x
  2. Step 2: Convert to fraction form
    409,622.60/614,520.30 = 172,843.40/x
  3. Step 3: Cross multiply
    409,622.60x = 614,520.30 × 172,843.40
  4. Step 4: Simplify right side
    409,622.60x = 106,215,778,021.02
  5. Step 5: Solve for x
    x = 106,215,778,021.02/409,622.60
  6. Step 6: Final answer
    x = 259,301.56

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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.