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Finding the Fourth Proportional to 376,878.99, 519,573.37 and 300,656.78

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Solution

The fourth proportional to 376,878.99, 519,573.37 and 300,656.78 is: 414,491.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,878.99 : 519,573.37 = 300,656.78 : x
  2. Step 2: Convert to fraction form
    376,878.99/519,573.37 = 300,656.78/x
  3. Step 3: Cross multiply
    376,878.99x = 519,573.37 × 300,656.78
  4. Step 4: Simplify right side
    376,878.99x = 156,213,256,397.95
  5. Step 5: Solve for x
    x = 156,213,256,397.95/376,878.99
  6. Step 6: Final answer
    x = 414,491.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.