Home / 319,198,391.69-440,493,581.53-172,520,675.69

Finding the Fourth Proportional to 319,198,391.69, 440,493,581.53 and 172,520,675.69

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Solution

The fourth proportional to 319,198,391.69, 440,493,581.53 and 172,520,675.69 is: 238,078,424.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,198,391.69 : 440,493,581.53 = 172,520,675.69 : x
  2. Step 2: Convert to fraction form
    319,198,391.69/440,493,581.53 = 172,520,675.69/x
  3. Step 3: Cross multiply
    319,198,391.69x = 440,493,581.53 × 172,520,675.69
  4. Step 4: Simplify right side
    319,198,391.69x = 75,994,250,320,675,168
  5. Step 5: Solve for x
    x = 75,994,250,320,675,168/319,198,391.69
  6. Step 6: Final answer
    x = 238,078,424.89

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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.