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Finding the Fourth Proportional to 269,656,986.40, 404,485,479.60 and 266,969,600.80

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Solution

The fourth proportional to 269,656,986.40, 404,485,479.60 and 266,969,600.80 is: 400,454,401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,656,986.40 : 404,485,479.60 = 266,969,600.80 : x
  2. Step 2: Convert to fraction form
    269,656,986.40/404,485,479.60 = 266,969,600.80/x
  3. Step 3: Cross multiply
    269,656,986.40x = 404,485,479.60 × 266,969,600.80
  4. Step 4: Simplify right side
    269,656,986.40x = 107,985,327,018,208,560
  5. Step 5: Solve for x
    x = 107,985,327,018,208,560/269,656,986.40
  6. Step 6: Final answer
    x = 400,454,401.20

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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.