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Finding the Fourth Proportional to 293,234.20, 439,851.30 and 259,991.80

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Solution

The fourth proportional to 293,234.20, 439,851.30 and 259,991.80 is: 389,987.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,234.20 : 439,851.30 = 259,991.80 : x
  2. Step 2: Convert to fraction form
    293,234.20/439,851.30 = 259,991.80/x
  3. Step 3: Cross multiply
    293,234.20x = 439,851.30 × 259,991.80
  4. Step 4: Simplify right side
    293,234.20x = 114,357,731,219.34
  5. Step 5: Solve for x
    x = 114,357,731,219.34/293,234.20
  6. Step 6: Final answer
    x = 389,987.70

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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.