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Finding the Fourth Proportional to 269,577,978.70, 404,366,968.05 and 258,996,397.90

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Solution

The fourth proportional to 269,577,978.70, 404,366,968.05 and 258,996,397.90 is: 388,494,596.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,577,978.70 : 404,366,968.05 = 258,996,397.90 : x
  2. Step 2: Convert to fraction form
    269,577,978.70/404,366,968.05 = 258,996,397.90/x
  3. Step 3: Cross multiply
    269,577,978.70x = 404,366,968.05 × 258,996,397.90
  4. Step 4: Simplify right side
    269,577,978.70x = 104,729,588,154,694,400
  5. Step 5: Solve for x
    x = 104,729,588,154,694,400/269,577,978.70
  6. Step 6: Final answer
    x = 388,494,596.85

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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.