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Finding the Fourth Proportional to 304,039.40, 455,540.70 and 251,162.60

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Solution

The fourth proportional to 304,039.40, 455,540.70 and 251,162.60 is: 376,315.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,039.40 : 455,540.70 = 251,162.60 : x
  2. Step 2: Convert to fraction form
    304,039.40/455,540.70 = 251,162.60/x
  3. Step 3: Cross multiply
    304,039.40x = 455,540.70 × 251,162.60
  4. Step 4: Simplify right side
    304,039.40x = 114,414,786,617.82
  5. Step 5: Solve for x
    x = 114,414,786,617.82/304,039.40
  6. Step 6: Final answer
    x = 376,315.66

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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.