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Finding the Fourth Proportional to 293,620.80, 440,431.20 and 251,630.40

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Solution

The fourth proportional to 293,620.80, 440,431.20 and 251,630.40 is: 377,445.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,620.80 : 440,431.20 = 251,630.40 : x
  2. Step 2: Convert to fraction form
    293,620.80/440,431.20 = 251,630.40/x
  3. Step 3: Cross multiply
    293,620.80x = 440,431.20 × 251,630.40
  4. Step 4: Simplify right side
    293,620.80x = 110,825,879,028.48
  5. Step 5: Solve for x
    x = 110,825,879,028.48/293,620.80
  6. Step 6: Final answer
    x = 377,445.60

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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.