Home / 319,198,392.69-440,493,582.91-172,520,676.69

Finding the Fourth Proportional to 319,198,392.69, 440,493,582.91 and 172,520,676.69

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Solution

The fourth proportional to 319,198,392.69, 440,493,582.91 and 172,520,676.69 is: 238,078,426.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,198,392.69 : 440,493,582.91 = 172,520,676.69 : x
  2. Step 2: Convert to fraction form
    319,198,392.69/440,493,582.91 = 172,520,676.69/x
  3. Step 3: Cross multiply
    319,198,392.69x = 440,493,582.91 × 172,520,676.69
  4. Step 4: Simplify right side
    319,198,392.69x = 75,994,251,001,235,824
  5. Step 5: Solve for x
    x = 75,994,251,001,235,824/319,198,392.69
  6. Step 6: Final answer
    x = 238,078,426.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.