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Finding the Fourth Proportional to 419,818.40, 629,612.44 and 251,206.08

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Solution

The fourth proportional to 419,818.40, 629,612.44 and 251,206.08 is: 376,740.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,818.40 : 629,612.44 = 251,206.08 : x
  2. Step 2: Convert to fraction form
    419,818.40/629,612.44 = 251,206.08/x
  3. Step 3: Cross multiply
    419,818.40x = 629,612.44 × 251,206.08
  4. Step 4: Simplify right side
    419,818.40x = 158,162,472,971.64
  5. Step 5: Solve for x
    x = 158,162,472,971.64/419,818.40
  6. Step 6: Final answer
    x = 376,740.21

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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.