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Finding the Fourth Proportional to 269,577,985.70, 404,366,978.55 and 258,996,404.90

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Solution

The fourth proportional to 269,577,985.70, 404,366,978.55 and 258,996,404.90 is: 388,494,607.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,577,985.70 : 404,366,978.55 = 258,996,404.90 : x
  2. Step 2: Convert to fraction form
    269,577,985.70/404,366,978.55 = 258,996,404.90/x
  3. Step 3: Cross multiply
    269,577,985.70x = 404,366,978.55 × 258,996,404.90
  4. Step 4: Simplify right side
    269,577,985.70x = 104,729,593,704,725,424
  5. Step 5: Solve for x
    x = 104,729,593,704,725,424/269,577,985.70
  6. Step 6: Final answer
    x = 388,494,607.35

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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.