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Finding the Fourth Proportional to 439,712.22, 659,682.04 and 257,496.90

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Solution

The fourth proportional to 439,712.22, 659,682.04 and 257,496.90 is: 386,311.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,712.22 : 659,682.04 = 257,496.90 : x
  2. Step 2: Convert to fraction form
    439,712.22/659,682.04 = 257,496.90/x
  3. Step 3: Cross multiply
    439,712.22x = 659,682.04 × 257,496.90
  4. Step 4: Simplify right side
    439,712.22x = 169,866,080,285.68
  5. Step 5: Solve for x
    x = 169,866,080,285.68/439,712.22
  6. Step 6: Final answer
    x = 386,311.94

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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.