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Finding the Fourth Proportional to 369,608,783.01, 509,978,576.89 and 218,826,568.36

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Solution

The fourth proportional to 369,608,783.01, 509,978,576.89 and 218,826,568.36 is: 301,932,386.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,608,783.01 : 509,978,576.89 = 218,826,568.36 : x
  2. Step 2: Convert to fraction form
    369,608,783.01/509,978,576.89 = 218,826,568.36/x
  3. Step 3: Cross multiply
    369,608,783.01x = 509,978,576.89 × 218,826,568.36
  4. Step 4: Simplify right side
    369,608,783.01x = 111,596,861,917,955,104
  5. Step 5: Solve for x
    x = 111,596,861,917,955,104/369,608,783.01
  6. Step 6: Final answer
    x = 301,932,386.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.