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Finding the Fourth Proportional to 399,650.88, 599,712.60 and 147,108.62

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Solution

The fourth proportional to 399,650.88, 599,712.60 and 147,108.62 is: 220,749.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,650.88 : 599,712.60 = 147,108.62 : x
  2. Step 2: Convert to fraction form
    399,650.88/599,712.60 = 147,108.62/x
  3. Step 3: Cross multiply
    399,650.88x = 599,712.60 × 147,108.62
  4. Step 4: Simplify right side
    399,650.88x = 88,222,892,982.61
  5. Step 5: Solve for x
    x = 88,222,892,982.61/399,650.88
  6. Step 6: Final answer
    x = 220,749.90

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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.