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Finding the Fourth Proportional to 363,929.31, 546,063.05 and 139,215.47

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Solution

The fourth proportional to 363,929.31, 546,063.05 and 139,215.47 is: 208,887.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,929.31 : 546,063.05 = 139,215.47 : x
  2. Step 2: Convert to fraction form
    363,929.31/546,063.05 = 139,215.47/x
  3. Step 3: Cross multiply
    363,929.31x = 546,063.05 × 139,215.47
  4. Step 4: Simplify right side
    363,929.31x = 76,020,421,773.11
  5. Step 5: Solve for x
    x = 76,020,421,773.11/363,929.31
  6. Step 6: Final answer
    x = 208,887.88

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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.