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Finding the Fourth Proportional to 438,738.60, 658,107.90 and 251,596.20

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Solution

The fourth proportional to 438,738.60, 658,107.90 and 251,596.20 is: 377,394.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,738.60 : 658,107.90 = 251,596.20 : x
  2. Step 2: Convert to fraction form
    438,738.60/658,107.90 = 251,596.20/x
  3. Step 3: Cross multiply
    438,738.60x = 658,107.90 × 251,596.20
  4. Step 4: Simplify right side
    438,738.60x = 165,577,446,829.98
  5. Step 5: Solve for x
    x = 165,577,446,829.98/438,738.60
  6. Step 6: Final answer
    x = 377,394.30

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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.