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Finding the Fourth Proportional to 363,930.31, 546,064.55 and 139,216.47

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Solution

The fourth proportional to 363,930.31, 546,064.55 and 139,216.47 is: 208,889.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,930.31 : 546,064.55 = 139,216.47 : x
  2. Step 2: Convert to fraction form
    363,930.31/546,064.55 = 139,216.47/x
  3. Step 3: Cross multiply
    363,930.31x = 546,064.55 × 139,216.47
  4. Step 4: Simplify right side
    363,930.31x = 76,021,179,043.14
  5. Step 5: Solve for x
    x = 76,021,179,043.14/363,930.31
  6. Step 6: Final answer
    x = 208,889.39

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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.