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Finding the Fourth Proportional to 376,495.09, 519,599.31 and 215,318.66

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Solution

The fourth proportional to 376,495.09, 519,599.31 and 215,318.66 is: 297,160.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,495.09 : 519,599.31 = 215,318.66 : x
  2. Step 2: Convert to fraction form
    376,495.09/519,599.31 = 215,318.66/x
  3. Step 3: Cross multiply
    376,495.09x = 519,599.31 × 215,318.66
  4. Step 4: Simplify right side
    376,495.09x = 111,879,423,760.68
  5. Step 5: Solve for x
    x = 111,879,423,760.68/376,495.09
  6. Step 6: Final answer
    x = 297,160.38

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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.