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Finding the Fourth Proportional to 269,951,890.50, 404,996,886.63 and 78,475,666.50

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Solution

The fourth proportional to 269,951,890.50, 404,996,886.63 and 78,475,666.50 is: 117,733,573.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,951,890.50 : 404,996,886.63 = 78,475,666.50 : x
  2. Step 2: Convert to fraction form
    269,951,890.50/404,996,886.63 = 78,475,666.50/x
  3. Step 3: Cross multiply
    269,951,890.50x = 404,996,886.63 × 78,475,666.50
  4. Step 4: Simplify right side
    269,951,890.50x = 31,782,400,608,714,188
  5. Step 5: Solve for x
    x = 31,782,400,608,714,188/269,951,890.50
  6. Step 6: Final answer
    x = 117,733,573.01

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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.