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Finding the Fourth Proportional to 329,042.44, 493,248.36 and 139,241.72

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Solution

The fourth proportional to 329,042.44, 493,248.36 and 139,241.72 is: 208,729.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,042.44 : 493,248.36 = 139,241.72 : x
  2. Step 2: Convert to fraction form
    329,042.44/493,248.36 = 139,241.72/x
  3. Step 3: Cross multiply
    329,042.44x = 493,248.36 × 139,241.72
  4. Step 4: Simplify right side
    329,042.44x = 68,680,748,622.72
  5. Step 5: Solve for x
    x = 68,680,748,622.72/329,042.44
  6. Step 6: Final answer
    x = 208,729.15

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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.