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Finding the Fourth Proportional to 329,265.54, 493,887.06 and 139,603.86

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Solution

The fourth proportional to 329,265.54, 493,887.06 and 139,603.86 is: 209,401.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,265.54 : 493,887.06 = 139,603.86 : x
  2. Step 2: Convert to fraction form
    329,265.54/493,887.06 = 139,603.86/x
  3. Step 3: Cross multiply
    329,265.54x = 493,887.06 × 139,603.86
  4. Step 4: Simplify right side
    329,265.54x = 68,948,539,980.05
  5. Step 5: Solve for x
    x = 68,948,539,980.05/329,265.54
  6. Step 6: Final answer
    x = 209,401.02

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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.