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Finding the Fourth Proportional to 269,576,018.20, 404,364,027.30 and 258,994,437.40

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Solution

The fourth proportional to 269,576,018.20, 404,364,027.30 and 258,994,437.40 is: 388,491,656.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,576,018.20 : 404,364,027.30 = 258,994,437.40 : x
  2. Step 2: Convert to fraction form
    269,576,018.20/404,364,027.30 = 258,994,437.40/x
  3. Step 3: Cross multiply
    269,576,018.20x = 404,364,027.30 × 258,994,437.40
  4. Step 4: Simplify right side
    269,576,018.20x = 104,728,033,755,361,744
  5. Step 5: Solve for x
    x = 104,728,033,755,361,744/269,576,018.20
  6. Step 6: Final answer
    x = 388,491,656.10

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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.