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Finding the Fourth Proportional to 219,857.51, 303,072.62 and 172,027.82

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Solution

The fourth proportional to 219,857.51, 303,072.62 and 172,027.82 is: 237,139.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,857.51 : 303,072.62 = 172,027.82 : x
  2. Step 2: Convert to fraction form
    219,857.51/303,072.62 = 172,027.82/x
  3. Step 3: Cross multiply
    219,857.51x = 303,072.62 × 172,027.82
  4. Step 4: Simplify right side
    219,857.51x = 52,136,919,744.79
  5. Step 5: Solve for x
    x = 52,136,919,744.79/219,857.51
  6. Step 6: Final answer
    x = 237,139.60

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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.