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Finding the Fourth Proportional to 440,999,819.92, 661,599,387.68 and 145,894,247.64

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Solution

The fourth proportional to 440,999,819.92, 661,599,387.68 and 145,894,247.64 is: 218,874,340.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,999,819.92 : 661,599,387.68 = 145,894,247.64 : x
  2. Step 2: Convert to fraction form
    440,999,819.92/661,599,387.68 = 145,894,247.64/x
  3. Step 3: Cross multiply
    440,999,819.92x = 661,599,387.68 × 145,894,247.64
  4. Step 4: Simplify right side
    440,999,819.92x = 96,523,544,904,658,272
  5. Step 5: Solve for x
    x = 96,523,544,904,658,272/440,999,819.92
  6. Step 6: Final answer
    x = 218,874,340.86

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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.