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Finding the Fourth Proportional to 343,479.60, 515,219.40 and 254,906.10

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Solution

The fourth proportional to 343,479.60, 515,219.40 and 254,906.10 is: 382,359.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,479.60 : 515,219.40 = 254,906.10 : x
  2. Step 2: Convert to fraction form
    343,479.60/515,219.40 = 254,906.10/x
  3. Step 3: Cross multiply
    343,479.60x = 515,219.40 × 254,906.10
  4. Step 4: Simplify right side
    343,479.60x = 131,332,567,898.34
  5. Step 5: Solve for x
    x = 131,332,567,898.34/343,479.60
  6. Step 6: Final answer
    x = 382,359.15

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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.