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Finding the Fourth Proportional to 339,881.36, 469,134.87 and 210,859.16

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Solution

The fourth proportional to 339,881.36, 469,134.87 and 210,859.16 is: 291,046.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,881.36 : 469,134.87 = 210,859.16 : x
  2. Step 2: Convert to fraction form
    339,881.36/469,134.87 = 210,859.16/x
  3. Step 3: Cross multiply
    339,881.36x = 469,134.87 × 210,859.16
  4. Step 4: Simplify right side
    339,881.36x = 98,921,384,614.91
  5. Step 5: Solve for x
    x = 98,921,384,614.91/339,881.36
  6. Step 6: Final answer
    x = 291,046.81

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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.