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Finding the Fourth Proportional to 372,464.11, 514,108.79 and 243,422

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Solution

The fourth proportional to 372,464.11, 514,108.79 and 243,422 is: 335,993.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,464.11 : 514,108.79 = 243,422 : x
  2. Step 2: Convert to fraction form
    372,464.11/514,108.79 = 243,422/x
  3. Step 3: Cross multiply
    372,464.11x = 514,108.79 × 243,422
  4. Step 4: Simplify right side
    372,464.11x = 125,145,389,879.38
  5. Step 5: Solve for x
    x = 125,145,389,879.38/372,464.11
  6. Step 6: Final answer
    x = 335,993.15

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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.