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Finding the Fourth Proportional to 338,892.78, 508,342.82 and 102,237.51

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Solution

The fourth proportional to 338,892.78, 508,342.82 and 102,237.51 is: 153,357.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,892.78 : 508,342.82 = 102,237.51 : x
  2. Step 2: Convert to fraction form
    338,892.78/508,342.82 = 102,237.51/x
  3. Step 3: Cross multiply
    338,892.78x = 508,342.82 × 102,237.51
  4. Step 4: Simplify right side
    338,892.78x = 51,971,704,143.18
  5. Step 5: Solve for x
    x = 51,971,704,143.18/338,892.78
  6. Step 6: Final answer
    x = 153,357.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.