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Finding the Fourth Proportional to 298,930,514.40, 448,395,771.60 and 251,313,400.80

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Solution

The fourth proportional to 298,930,514.40, 448,395,771.60 and 251,313,400.80 is: 376,970,101.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,930,514.40 : 448,395,771.60 = 251,313,400.80 : x
  2. Step 2: Convert to fraction form
    298,930,514.40/448,395,771.60 = 251,313,400.80/x
  3. Step 3: Cross multiply
    298,930,514.40x = 448,395,771.60 × 251,313,400.80
  4. Step 4: Simplify right side
    298,930,514.40x = 112,687,866,265,136,064
  5. Step 5: Solve for x
    x = 112,687,866,265,136,064/298,930,514.40
  6. Step 6: Final answer
    x = 376,970,101.20

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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.