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Finding the Fourth Proportional to 336,882,405.60, 505,323,608.40 and 205,935,343.20

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Solution

The fourth proportional to 336,882,405.60, 505,323,608.40 and 205,935,343.20 is: 308,903,014.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,882,405.60 : 505,323,608.40 = 205,935,343.20 : x
  2. Step 2: Convert to fraction form
    336,882,405.60/505,323,608.40 = 205,935,343.20/x
  3. Step 3: Cross multiply
    336,882,405.60x = 505,323,608.40 × 205,935,343.20
  4. Step 4: Simplify right side
    336,882,405.60x = 104,063,990,722,916,384
  5. Step 5: Solve for x
    x = 104,063,990,722,916,384/336,882,405.60
  6. Step 6: Final answer
    x = 308,903,014.80

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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.